400408158 has 16 divisors (see below), whose sum is σ = 803128320. Its totient is φ = 133084056.

The previous prime is 400408153. The next prime is 400408171. The reversal of 400408158 is 851804004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400408153) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 94078 + ... + 98241.

It is an arithmetic number, because the mean of its divisors is an integer number (50195520).

Almost surely, 2^400408158 is an apocalyptic number.

400408158 is an abundant number, since it is smaller than the sum of its proper divisors (402720162).

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

400408158 is a wasteful number, since it uses less digits than its factorization.

400408158 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 192671.

The product of its (nonzero) digits is 5120, while the sum is 30.

The square root of 400408158 is about 20010.2013483123. The cubic root of 400408158 is about 737.0568256903.

The spelling of 400408158 in words is "four hundred million, four hundred eight thousand, one hundred fifty-eight".