350640639 has 12 divisors (see below), whose sum is σ = 506643696. Its totient is φ = 233685312.

The previous prime is 350640637. The next prime is 350640673. The reversal of 350640639 is 936046053.

350640639 is a `hidden beast` number, since 3 + 5 + 0 + 640 + 6 + 3 + 9 = 666.

It is not a de Polignac number, because 350640639 - 2¹ = 350640637 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (350640637) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 48679 + ... + 55415.

It is an arithmetic number, because the mean of its divisors is an integer number (42220308).

Almost surely, 2^350640639 is an apocalyptic number.

350640639 is a deficient number, since it is larger than the sum of its proper divisors (156003057).

350640639 is a wasteful number, since it uses less digits than its factorization.

350640639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12526 (or 12523 counting only the distinct ones).

The product of its (nonzero) digits is 58320, while the sum is 36.

The square root of 350640639 is about 18725.4009035855. The cubic root of 350640639 is about 705.1595896446.

The spelling of 350640639 in words is "three hundred fifty million, six hundred forty thousand, six hundred thirty-nine".