400707 has 24 divisors (see below), whose sum is σ = 642096. Its totient is φ = 248832.

The previous prime is 400703. The next prime is 400711. The reversal of 400707 is 707004.

400707 = 38³ + 39³ + ... + 43³.

It is an interprime number because it is at equal distance from previous prime (400703) and next prime (400711).

It is not a de Polignac number, because 400707 - 2² = 400703 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 400707.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 400707.

It is not an unprimeable number, because it can be changed into a prime (400703) 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, 4083 + ... + 4179.

It is an arithmetic number, because the mean of its divisors is an integer number (26754).

2⁴⁰⁰⁷⁰⁷ is an apocalyptic number.

400707 is a deficient number, since it is larger than the sum of its proper divisors (241389).

400707 is an equidigital number, since it uses as much as digits as its factorization.

400707 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129 (or 117 counting only the distinct ones).

The product of its (nonzero) digits is 196, while the sum is 18.

The square root of 400707 is about 633.0142178498. The cubic root of 400707 is about 73.7240145932.

Subtracting from 400707 its sum of digits (18), we obtain a square (400689 = 633²).

The spelling of 400707 in words is "four hundred thousand, seven hundred seven", and thus it is an iban number.