400221098 has 16 divisors (see below), whose sum is σ = 621457920. Its totient is φ = 193105200.

The previous prime is 400221053. The next prime is 400221109. The reversal of 400221098 is 890122004.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13268 + ... + 31248.

It is an arithmetic number, because the mean of its divisors is an integer number (38841120).

Almost surely, 2^400221098 is an apocalyptic number.

400221098 is a deficient number, since it is larger than the sum of its proper divisors (221236822).

400221098 is a wasteful number, since it uses less digits than its factorization.

400221098 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18373.

The product of its (nonzero) digits is 1152, while the sum is 26.

The square root of 400221098 is about 20005.5266863934. The cubic root of 400221098 is about 736.9420300558.

The spelling of 400221098 in words is "four hundred million, two hundred twenty-one thousand, ninety-eight".