394922732390 has 16 divisors (see below), whose sum is σ = 710870746320. Its totient is φ = 157966908960.

The previous prime is 394922732389. The next prime is 394922732419. The reversal of 394922732390 is 93237229493.

It is a super-2 number, since 2×394922732390² (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, 628100 + ... + 1088280.

It is an arithmetic number, because the mean of its divisors is an integer number (44429421645).

Almost surely, 2^394922732390 is an apocalyptic number.

394922732390 is a deficient number, since it is larger than the sum of its proper divisors (315948013930).

394922732390 is a wasteful number, since it uses less digits than its factorization.

394922732390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 546007.

The product of its (nonzero) digits is 4408992, while the sum is 53.

The spelling of 394922732390 in words is "three hundred ninety-four billion, nine hundred twenty-two million, seven hundred thirty-two thousand, three hundred ninety".