396332643 has 32 divisors (see below), whose sum is σ = 611633664. Its totient is φ = 223610112.

The previous prime is 396332639. The next prime is 396332659. The reversal of 396332643 is 346233693.

It is not a de Polignac number, because 396332643 - 2² = 396332639 is a prime.

It is not an unprimeable number, because it can be changed into a prime (396332243) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 998121 + ... + 998517.

It is an arithmetic number, because the mean of its divisors is an integer number (19113552).

Almost surely, 2^396332643 is an apocalyptic number.

396332643 is a deficient number, since it is larger than the sum of its proper divisors (215301021).

396332643 is a wasteful number, since it uses less digits than its factorization.

396332643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 891.

The product of its digits is 209952, while the sum is 39.

The square root of 396332643 is about 19908.1049575292. The cubic root of 396332643 is about 734.5476062857.

The spelling of 396332643 in words is "three hundred ninety-six million, three hundred thirty-two thousand, six hundred forty-three".