400708 has 24 divisors (see below), whose sum is σ = 874944. Its totient is φ = 156000.

The previous prime is 400703. The next prime is 400711. The reversal of 400708 is 807004.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (400703) by changing a digit.

400708 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 343 + ... + 958.

It is an arithmetic number, because the mean of its divisors is an integer number (36456).

2⁴⁰⁰⁷⁰⁸ is an apocalyptic number.

It is an amenable number.

400708 is an abundant number, since it is smaller than the sum of its proper divisors (474236).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

400708 is a wasteful number, since it uses less digits than its factorization.

400708 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1323 (or 1321 counting only the distinct ones).

The product of its (nonzero) digits is 224, while the sum is 19.

The square root of 400708 is about 633.0150077210. The cubic root of 400708 is about 73.7240759215.

Subtracting from 400708 its sum of digits (19), we obtain a square (400689 = 633²).

The spelling of 400708 in words is "four hundred thousand, seven hundred eight".