396622449 has 12 divisors (see below), whose sum is σ = 573167556. Its totient is φ = 264291072.

The previous prime is 396622441. The next prime is 396622469. The reversal of 396622449 is 944226693.

It can be written as a sum of positive squares in 2 ways, for example, as 334890000 + 61732449 = 18300^2 + 7857^2 .

It is not a de Polignac number, because 396622449 - 2³ = 396622441 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (396622441) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12637 + ... + 30869.

It is an arithmetic number, because the mean of its divisors is an integer number (47763963).

Almost surely, 2^396622449 is an apocalyptic number.

It is an amenable number.

396622449 is a deficient number, since it is larger than the sum of its proper divisors (176545107).

396622449 is a wasteful number, since it uses less digits than its factorization.

396622449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20656 (or 20653 counting only the distinct ones).

The product of its digits is 559872, while the sum is 45.

The square root of 396622449 is about 19915.3822207860. The cubic root of 396622449 is about 734.7266010788.

The spelling of 396622449 in words is "three hundred ninety-six million, six hundred twenty-two thousand, four hundred forty-nine".