396555394 has 8 divisors (see below), whose sum is σ = 594918540. Its totient is φ = 198249216.

The previous prime is 396555389. The next prime is 396555409. The reversal of 396555394 is 493555693.

It can be written as a sum of positive squares in 2 ways, for example, as 381694369 + 14861025 = 19537^2 + 3855^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16042 + ... + 32410.

Almost surely, 2^396555394 is an apocalyptic number.

396555394 is a deficient number, since it is larger than the sum of its proper divisors (198363146).

396555394 is a wasteful number, since it uses less digits than its factorization.

396555394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28484.

The product of its digits is 2187000, while the sum is 49.

The square root of 396555394 is about 19913.6986519330. The cubic root of 396555394 is about 734.6851932117.

The spelling of 396555394 in words is "three hundred ninety-six million, five hundred fifty-five thousand, three hundred ninety-four".