400039713 has 24 divisors (see below), whose sum is σ = 607746048. Its totient is φ = 253072512.

The previous prime is 400039711. The next prime is 400039729. The reversal of 400039713 is 317930004.

It is not a de Polignac number, because 400039713 - 2¹ = 400039711 is a prime.

It is not an unprimeable number, because it can be changed into a prime (400039711) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 18681 + ... + 33897.

It is an arithmetic number, because the mean of its divisors is an integer number (25322752).

Almost surely, 2^400039713 is an apocalyptic number.

It is an amenable number.

400039713 is a deficient number, since it is larger than the sum of its proper divisors (207706335).

400039713 is a wasteful number, since it uses less digits than its factorization.

400039713 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15373 (or 15370 counting only the distinct ones).

The product of its (nonzero) digits is 2268, while the sum is 27.

The square root of 400039713 is about 20000.9928003587. The cubic root of 400039713 is about 736.8306829116.

Adding to 400039713 its reverse (317930004), we get a palindrome (717969717).

The spelling of 400039713 in words is "four hundred million, thirty-nine thousand, seven hundred thirteen".