394149888026 has 16 divisors (see below), whose sum is σ = 597333654528. Its totient is φ = 195041034000.

The previous prime is 394149887981. The next prime is 394149888101. The reversal of 394149888026 is 620888941493.

It is a self number, because there is not a number n which added to its sum of digits gives 394149888026.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 256250 + ... + 924101.

It is an arithmetic number, because the mean of its divisors is an integer number (37333353408).

Almost surely, 2^394149888026 is an apocalyptic number.

394149888026 is a deficient number, since it is larger than the sum of its proper divisors (203183766502).

394149888026 is a wasteful number, since it uses less digits than its factorization.

394149888026 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1182077.

The product of its (nonzero) digits is 23887872, while the sum is 62.

The spelling of 394149888026 in words is "three hundred ninety-four billion, one hundred forty-nine million, eight hundred eighty-eight thousand, twenty-six".