394617216902 has 16 divisors (see below), whose sum is σ = 632089872000. Its totient is φ = 184359544320.

The previous prime is 394617216899. The next prime is 394617216913. The reversal of 394617216902 is 209612716493.

It is a super-2 number, since 2×394617216902² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

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, 109736027 + ... + 109739622.

It is an arithmetic number, because the mean of its divisors is an integer number (39505617000).

Almost surely, 2^394617216902 is an apocalyptic number.

394617216902 is a deficient number, since it is larger than the sum of its proper divisors (237472655098).

394617216902 is a wasteful number, since it uses less digits than its factorization.

394617216902 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 219475711.

The product of its (nonzero) digits is 979776, while the sum is 50.

The spelling of 394617216902 in words is "three hundred ninety-four billion, six hundred seventeen million, two hundred sixteen thousand, nine hundred two".