396469561 has 32 divisors (see below), whose sum is σ = 449971200. Its totient is φ = 347561280.

The previous prime is 396469559. The next prime is 396469583. The reversal of 396469561 is 165964693.

It is not a de Polignac number, because 396469561 - 2¹ = 396469559 is a prime.

It is a super-2 number, since 2×396469561² = 314376225599065442, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (396469501) 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, 2852230 + ... + 2852368.

It is an arithmetic number, because the mean of its divisors is an integer number (14061600).

Almost surely, 2^396469561 is an apocalyptic number.

It is an amenable number.

396469561 is a deficient number, since it is larger than the sum of its proper divisors (53501639).

396469561 is a wasteful number, since it uses less digits than its factorization.

396469561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 349.

The product of its digits is 1049760, while the sum is 49.

The square root of 396469561 is about 19911.5434107957. The cubic root of 396469561 is about 734.6321827241.

The spelling of 396469561 in words is "three hundred ninety-six million, four hundred sixty-nine thousand, five hundred sixty-one".