396474491 has 8 divisors (see below), whose sum is σ = 463651584. Its totient is φ = 331931880.

The previous prime is 396474479. The next prime is 396474497. The reversal of 396474491 is 194474693.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 396474491 - 2¹⁸ = 396212347 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (396474497) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 658295 + ... + 658896.

It is an arithmetic number, because the mean of its divisors is an integer number (57956448).

Almost surely, 2^396474491 is an apocalyptic number.

396474491 is a deficient number, since it is larger than the sum of its proper divisors (67177093).

396474491 is a wasteful number, since it uses less digits than its factorization.

396474491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1317241.

The product of its digits is 653184, while the sum is 47.

The square root of 396474491 is about 19911.6672079462. The cubic root of 396474491 is about 734.6352277007.

The spelling of 396474491 in words is "three hundred ninety-six million, four hundred seventy-four thousand, four hundred ninety-one".