400621713 has 4 divisors (see below), whose sum is σ = 534162288. Its totient is φ = 267081140.

The previous prime is 400621703. The next prime is 400621723. The reversal of 400621713 is 317126004.

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 an interprime number because it is at equal distance from previous prime (400621703) and next prime (400621723).

It is a cyclic number.

It is not a de Polignac number, because 400621713 - 2¹⁸ = 400359569 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (400621703) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 66770283 + ... + 66770288.

It is an arithmetic number, because the mean of its divisors is an integer number (133540572).

Almost surely, 2^400621713 is an apocalyptic number.

It is an amenable number.

400621713 is a deficient number, since it is larger than the sum of its proper divisors (133540575).

400621713 is a wasteful number, since it uses less digits than its factorization.

400621713 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133540574.

The product of its (nonzero) digits is 1008, while the sum is 24.

The square root of 400621713 is about 20015.5367902038. The cubic root of 400621713 is about 737.1878371698.

Adding to 400621713 its reverse (317126004), we get a palindrome (717747717).

The spelling of 400621713 in words is "four hundred million, six hundred twenty-one thousand, seven hundred thirteen".