164950439 has 4 divisors (see below), whose sum is σ = 174653424. Its totient is φ = 155247456.

The previous prime is 164950433. The next prime is 164950441. The reversal of 164950439 is 934059461.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-164950439 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 164950396 and 164950405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164950433) 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, 4851467 + ... + 4851500.

It is an arithmetic number, because the mean of its divisors is an integer number (43663356).

Almost surely, 2^164950439 is an apocalyptic number.

164950439 is a deficient number, since it is larger than the sum of its proper divisors (9702985).

164950439 is an equidigital number, since it uses as much as digits as its factorization.

164950439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9702984.

The product of its (nonzero) digits is 116640, while the sum is 41.

The square root of 164950439 is about 12843.3032744695. The cubic root of 164950439 is about 548.4257340879.

The spelling of 164950439 in words is "one hundred sixty-four million, nine hundred fifty thousand, four hundred thirty-nine".