400798 has 8 divisors (see below), whose sum is σ = 627408. Its totient is φ = 191664.

The previous prime is 400759. The next prime is 400823. The reversal of 400798 is 897004.

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

It is a congruent number.

It is an unprimeable 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, 4311 + ... + 4402.

It is an arithmetic number, because the mean of its divisors is an integer number (78426).

2⁴⁰⁰⁷⁹⁸ is an apocalyptic number.

400798 is a deficient number, since it is larger than the sum of its proper divisors (226610).

400798 is a wasteful number, since it uses less digits than its factorization.

400798 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8738.

The product of its (nonzero) digits is 2016, while the sum is 28.

The square root of 400798 is about 633.0860920917. The cubic root of 400798 is about 73.7295950444.

The spelling of 400798 in words is "four hundred thousand, seven hundred ninety-eight".