396946018 has 16 divisors (see below), whose sum is σ = 683331840. Its totient is φ = 169406496.

The previous prime is 396946013. The next prime is 396946031. The reversal of 396946018 is 810649693.

It is a super-2 number, since 2×396946018² = 315132282412112648, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (396946013) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 55971 + ... + 62662.

It is an arithmetic number, because the mean of its divisors is an integer number (42708240).

Almost surely, 2^396946018 is an apocalyptic number.

396946018 is a deficient number, since it is larger than the sum of its proper divisors (286385822).

396946018 is a wasteful number, since it uses less digits than its factorization.

396946018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118881.

The product of its (nonzero) digits is 279936, while the sum is 46.

The square root of 396946018 is about 19923.5041596603. The cubic root of 396946018 is about 734.9263461450.

The spelling of 396946018 in words is "three hundred ninety-six million, nine hundred forty-six thousand, eighteen".