396221624 has 16 divisors (see below), whose sum is σ = 744686520. Its totient is φ = 197638560.

The previous prime is 396221599. The next prime is 396221627. The reversal of 396221624 is 426122693.

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (396221627) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55454 + ... + 62189.

Almost surely, 2^396221624 is an apocalyptic number.

It is an amenable number.

396221624 is a deficient number, since it is larger than the sum of its proper divisors (348464896).

396221624 is a wasteful number, since it uses less digits than its factorization.

396221624 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118070 (or 118066 counting only the distinct ones).

The product of its digits is 31104, while the sum is 35.

The square root of 396221624 is about 19905.3164757559. The cubic root of 396221624 is about 734.4790137724.

The spelling of 396221624 in words is "three hundred ninety-six million, two hundred twenty-one thousand, six hundred twenty-four".