398465613 has 24 divisors (see below), whose sum is σ = 708384768. Its totient is φ = 210179232.

The previous prime is 398465591. The next prime is 398465623. The reversal of 398465613 is 316564893.

398465613 is a `hidden beast` number, since 3 + 9 + 84 + 6 + 561 + 3 = 666.

It is not a de Polignac number, because 398465613 - 2⁵ = 398465581 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (398465623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 242445 + ... + 244082.

It is an arithmetic number, because the mean of its divisors is an integer number (29516032).

Almost surely, 2^398465613 is an apocalyptic number.

It is an amenable number.

398465613 is a deficient number, since it is larger than the sum of its proper divisors (309919155).

398465613 is a wasteful number, since it uses less digits than its factorization.

398465613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 486553 (or 486550 counting only the distinct ones).

The product of its digits is 466560, while the sum is 45.

The square root of 398465613 is about 19961.6034676576. The cubic root of 398465613 is about 735.8629708317.

The spelling of 398465613 in words is "three hundred ninety-eight million, four hundred sixty-five thousand, six hundred thirteen".