400958 has 8 divisors (see below), whose sum is σ = 604128. Its totient is φ = 199584.

The previous prime is 400949. The next prime is 400963. The reversal of 400958 is 859004.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

400958 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

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, 635 + ... + 1097.

It is an arithmetic number, because the mean of its divisors is an integer number (75516).

2⁴⁰⁰⁹⁵⁸ is an apocalyptic number.

400958 is a deficient number, since it is larger than the sum of its proper divisors (203170).

400958 is a wasteful number, since it uses less digits than its factorization.

400958 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 898.

The product of its (nonzero) digits is 1440, while the sum is 26.

The square root of 400958 is about 633.2124446029. The cubic root of 400958 is about 73.7394047788.

The spelling of 400958 in words is "four hundred thousand, nine hundred fifty-eight".