396746642 has 16 divisors (see below), whose sum is σ = 622460160. Its totient is φ = 189300672.

The previous prime is 396746617. The next prime is 396746699. The reversal of 396746642 is 246647693.

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, 9959 + ... + 29877.

It is an arithmetic number, because the mean of its divisors is an integer number (38903760).

Almost surely, 2^396746642 is an apocalyptic number.

It is a pronic number, being equal to 19918×19919.

396746642 is a deficient number, since it is larger than the sum of its proper divisors (225713518).

396746642 is a wasteful number, since it uses less digits than its factorization.

396746642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20377.

The product of its digits is 1306368, while the sum is 47.

The square root of 396746642 is about 19918.4999937244. The cubic root of 396746642 is about 734.8032805327.

The spelling of 396746642 in words is "three hundred ninety-six million, seven hundred forty-six thousand, six hundred forty-two".