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214480909 = 316918739
BaseRepresentation
bin11001100100010…
…11100000001101
3112221120202111101
430302023200031
5414401342114
633141023101
75213025526
oct1462134015
9487522441
10214480909
11100083755
125b9b4a91
13355875a6
14206b184d
1513c69d74
hexcc8b80d

214480909 has 4 divisors (see below), whose sum is σ = 221399680. Its totient is φ = 207562140.

The previous prime is 214480907. The next prime is 214480919. The reversal of 214480909 is 909084412.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 214480909 - 21 = 214480907 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (214480901) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3459339 + ... + 3459400.

It is an arithmetic number, because the mean of its divisors is an integer number (55349920).

Almost surely, 2214480909 is an apocalyptic number.

It is an amenable number.

214480909 is a deficient number, since it is larger than the sum of its proper divisors (6918771).

214480909 is an equidigital number, since it uses as much as digits as its factorization.

214480909 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6918770.

The product of its (nonzero) digits is 20736, while the sum is 37.

The square root of 214480909 is about 14645.1667453805. The cubic root of 214480909 is about 598.5901239366.

The spelling of 214480909 in words is "two hundred fourteen million, four hundred eighty thousand, nine hundred nine".

Divisors: 1 31 6918739 214480909