400706013 has 8 divisors (see below), whose sum is σ = 535392000. Its totient is φ = 266578688.

The previous prime is 400705951. The next prime is 400706039. The reversal of 400706013 is 310607004.

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

It is a cyclic number.

It is not a de Polignac number, because 400706013 - 2²⁵ = 367151581 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400706413) 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, 137988 + ... + 140861.

It is an arithmetic number, because the mean of its divisors is an integer number (66924000).

Almost surely, 2^400706013 is an apocalyptic number.

It is an amenable number.

400706013 is a deficient number, since it is larger than the sum of its proper divisors (134685987).

400706013 is a wasteful number, since it uses less digits than its factorization.

400706013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 279331.

The product of its (nonzero) digits is 504, while the sum is 21.

The square root of 400706013 is about 20017.6425435165. The cubic root of 400706013 is about 737.2395406216.

Subtracting from 400706013 its reverse (310607004), we obtain a palindrome (90099009).

The spelling of 400706013 in words is "four hundred million, seven hundred six thousand, thirteen".