400620713 has 4 divisors (see below), whose sum is σ = 400674960. Its totient is φ = 400566468.

The previous prime is 400620709. The next prime is 400620721. The reversal of 400620713 is 317026004.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 400620713 - 2² = 400620709 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (400620313) 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 3 ways as a sum of consecutive naturals, for example, 13895 + ... + 31532.

It is an arithmetic number, because the mean of its divisors is an integer number (100168740).

Almost surely, 2^400620713 is an apocalyptic number.

It is an amenable number.

400620713 is a deficient number, since it is larger than the sum of its proper divisors (54247).

400620713 is an equidigital number, since it uses as much as digits as its factorization.

400620713 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54246.

The product of its (nonzero) digits is 1008, while the sum is 23.

The square root of 400620713 is about 20015.5118095941. The cubic root of 400620713 is about 737.1872237995.

Adding to 400620713 its reverse (317026004), we get a palindrome (717646717).

The spelling of 400620713 in words is "four hundred million, six hundred twenty thousand, seven hundred thirteen".