400088998 has 8 divisors (see below), whose sum is σ = 606876840. Its totient is φ = 197796720.

The previous prime is 400088993. The next prime is 400089031. The reversal of 400088998 is 899880004.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400088993) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1123668 + ... + 1124023.

It is an arithmetic number, because the mean of its divisors is an integer number (75859605).

Almost surely, 2^400088998 is an apocalyptic number.

400088998 is a deficient number, since it is larger than the sum of its proper divisors (206787842).

400088998 is a wasteful number, since it uses less digits than its factorization.

400088998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2247782.

The product of its (nonzero) digits is 165888, while the sum is 46.

The square root of 400088998 is about 20002.2248262537. The cubic root of 400088998 is about 736.8609409150.

The spelling of 400088998 in words is "four hundred million, eighty-eight thousand, nine hundred ninety-eight".