395797704638 has 16 divisors (see below), whose sum is σ = 679568884704. Its totient is φ = 169362954240.

The previous prime is 395797704629. The next prime is 395797704649. The reversal of 395797704638 is 836407797593.

It is a super-2 number, since 2×395797704638² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22043495 + ... + 22061442.

It is an arithmetic number, because the mean of its divisors is an integer number (42473055294).

Almost surely, 2^395797704638 is an apocalyptic number.

395797704638 is a deficient number, since it is larger than the sum of its proper divisors (283771180066).

395797704638 is a wasteful number, since it uses less digits than its factorization.

395797704638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44105587.

The product of its (nonzero) digits is 240045120, while the sum is 68.

The spelling of 395797704638 in words is "three hundred ninety-five billion, seven hundred ninety-seven million, seven hundred four thousand, six hundred thirty-eight".