394906139702 has 16 divisors (see below), whose sum is σ = 611799832512. Its totient is φ = 191058693000.

The previous prime is 394906139699. The next prime is 394906139713. The reversal of 394906139702 is 207931609493.

It is a happy number.

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, 21448424 + ... + 21466827.

It is an arithmetic number, because the mean of its divisors is an integer number (38237489532).

Almost surely, 2^394906139702 is an apocalyptic number.

394906139702 is a deficient number, since it is larger than the sum of its proper divisors (216893692810).

394906139702 is a wasteful number, since it uses less digits than its factorization.

394906139702 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42915403.

The product of its (nonzero) digits is 2204496, while the sum is 53.

The spelling of 394906139702 in words is "three hundred ninety-four billion, nine hundred six million, one hundred thirty-nine thousand, seven hundred two".