400223998 has 8 divisors (see below), whose sum is σ = 600421680. Its totient is φ = 200083440.

The previous prime is 400223969. The next prime is 400224007. The reversal of 400223998 is 899322004.

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 polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16543 + ... + 32773.

It is an arithmetic number, because the mean of its divisors is an integer number (75052710).

Almost surely, 2^400223998 is an apocalyptic number.

400223998 is a deficient number, since it is larger than the sum of its proper divisors (200197682).

400223998 is a wasteful number, since it uses less digits than its factorization.

400223998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28562.

The product of its (nonzero) digits is 31104, while the sum is 37.

The square root of 400223998 is about 20005.5991662334. The cubic root of 400223998 is about 736.9438100109.

The spelling of 400223998 in words is "four hundred million, two hundred twenty-three thousand, nine hundred ninety-eight".