34639679 has 16 divisors (see below), whose sum is σ = 39290880. Its totient is φ = 30365280.

The previous prime is 34639673. The next prime is 34639697. The reversal of 34639679 is 97693643.

34639679 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 34639679 - 2⁴ = 34639663 is a prime.

It is a super-2 number, since 2×34639679² = 2399814722446082, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (34639673) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12269 + ... + 14825.

It is an arithmetic number, because the mean of its divisors is an integer number (2455680).

Almost surely, 2^34639679 is an apocalyptic number.

34639679 is a deficient number, since it is larger than the sum of its proper divisors (4651201).

34639679 is a wasteful number, since it uses less digits than its factorization.

34639679 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2630.

The product of its digits is 734832, while the sum is 47.

The square root of 34639679 is about 5885.5483177016. The cubic root of 34639679 is about 325.9802483422.

The spelling of 34639679 in words is "thirty-four million, six hundred thirty-nine thousand, six hundred seventy-nine".