48243209 has 4 divisors (see below), whose sum is σ = 55135104. Its totient is φ = 41351316.

The previous prime is 48243199. The next prime is 48243257. The reversal of 48243209 is 90234284.

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 48243209 - 2⁴ = 48243193 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (48243809) 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, 3445937 + ... + 3445950.

It is an arithmetic number, because the mean of its divisors is an integer number (13783776).

Almost surely, 2^48243209 is an apocalyptic number.

It is an amenable number.

48243209 is a deficient number, since it is larger than the sum of its proper divisors (6891895).

48243209 is an equidigital number, since it uses as much as digits as its factorization.

48243209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6891894.

The product of its (nonzero) digits is 13824, while the sum is 32.

The square root of 48243209 is about 6945.7331506472. The cubic root of 48243209 is about 364.0368904567.

The spelling of 48243209 in words is "forty-eight million, two hundred forty-three thousand, two hundred nine".