393961038 has 16 divisors (see below), whose sum is σ = 796046160. Its totient is φ = 129966336.

The previous prime is 393961019. The next prime is 393961049. The reversal of 393961038 is 830169393.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 337873 + ... + 339036.

It is an arithmetic number, because the mean of its divisors is an integer number (49752885).

Almost surely, 2^393961038 is an apocalyptic number.

393961038 is an abundant number, since it is smaller than the sum of its proper divisors (402085122).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

393961038 is a wasteful number, since it uses less digits than its factorization.

393961038 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 677011.

The product of its (nonzero) digits is 104976, while the sum is 42.

The square root of 393961038 is about 19848.4517784133. The cubic root of 393961038 is about 733.0795270899.

The spelling of 393961038 in words is "three hundred ninety-three million, nine hundred sixty-one thousand, thirty-eight".