400694013 has 8 divisors (see below), whose sum is σ = 593620800. Its totient is φ = 267129324.

The previous prime is 400693981. The next prime is 400694039. The reversal of 400694013 is 310496004.

It is not a de Polignac number, because 400694013 - 2⁵ = 400693981 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 14840519 = 400694013 / (4 + 0 + 0 + 6 + 9 + 4 + 0 + 1 + 3).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400694093) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7420233 + ... + 7420286.

It is an arithmetic number, because the mean of its divisors is an integer number (74202600).

Almost surely, 2^400694013 is an apocalyptic number.

It is an amenable number.

400694013 is a deficient number, since it is larger than the sum of its proper divisors (192926787).

400694013 is a wasteful number, since it uses less digits than its factorization.

400694013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14840528 (or 14840522 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 400694013 is about 20017.3428056773. The cubic root of 400694013 is about 737.2321811423.

The spelling of 400694013 in words is "four hundred million, six hundred ninety-four thousand, thirteen".