394564361924 has 6 divisors (see below), whose sum is σ = 690487633374. Its totient is φ = 197282180960.

The previous prime is 394564361839. The next prime is 394564361951. The reversal of 394564361924 is 429163465493.

It can be written as a sum of positive squares in only one way, i.e., 394406608324 + 157753600 = 628018^2 + 12560^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 394564361924.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49320545237 + ... + 49320545244.

It is an arithmetic number, because the mean of its divisors is an integer number (115081272229).

Almost surely, 2^394564361924 is an apocalyptic number.

It is an amenable number.

394564361924 is a deficient number, since it is larger than the sum of its proper divisors (295923271450).

394564361924 is a wasteful number, since it uses less digits than its factorization.

394564361924 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98641090485 (or 98641090483 counting only the distinct ones).

The product of its digits is 16796160, while the sum is 56.

The spelling of 394564361924 in words is "three hundred ninety-four billion, five hundred sixty-four million, three hundred sixty-one thousand, nine hundred twenty-four".