34640439 has 8 divisors (see below), whose sum is σ = 48618240. Its totient is φ = 21878136.

The previous prime is 34640383. The next prime is 34640447. The reversal of 34640439 is 93404643.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 34640439 - 2⁸ = 34640183 is a prime.

It is a super-2 number, since 2×34640439² = 2399920028225442, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (34640479) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 303807 + ... + 303920.

It is an arithmetic number, because the mean of its divisors is an integer number (6077280).

Almost surely, 2^34640439 is an apocalyptic number.

34640439 is a deficient number, since it is larger than the sum of its proper divisors (13977801).

34640439 is a wasteful number, since it uses less digits than its factorization.

34640439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 607749.

The product of its (nonzero) digits is 31104, while the sum is 33.

The square root of 34640439 is about 5885.6128822749. The cubic root of 34640439 is about 325.9826323441.

The spelling of 34640439 in words is "thirty-four million, six hundred forty thousand, four hundred thirty-nine".