34399965 has 16 divisors (see below), whose sum is σ = 55556928. Its totient is φ = 18174336.

The previous prime is 34399921. The next prime is 34399991. The reversal of 34399965 is 56999343.

It is a happy number.

It is not a de Polignac number, because 34399965 - 2⁶ = 34399901 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9112 + ... + 12321.

It is an arithmetic number, because the mean of its divisors is an integer number (3472308).

Almost surely, 2^34399965 is an apocalyptic number.

It is an amenable number.

34399965 is a deficient number, since it is larger than the sum of its proper divisors (21156963).

34399965 is a wasteful number, since it uses less digits than its factorization.

34399965 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21548.

The product of its digits is 787320, while the sum is 48.

The square root of 34399965 is about 5865.1483357201. The cubic root of 34399965 is about 325.2265560361.

The spelling of 34399965 in words is "thirty-four million, three hundred ninety-nine thousand, nine hundred sixty-five".