401355198 has 24 divisors (see below), whose sum is σ = 907412688. Its totient is φ = 127968192.

The previous prime is 401355187. The next prime is 401355203. The reversal of 401355198 is 891553104.

401355198 is a `hidden beast` number, since 4 + 0 + 13 + 551 + 98 = 666.

It is a super-2 number, since 2×401355198² = 322171989923238408, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 484315 + ... + 485142.

It is an arithmetic number, because the mean of its divisors is an integer number (37808862).

Almost surely, 2^401355198 is an apocalyptic number.

401355198 is an abundant number, since it is smaller than the sum of its proper divisors (506057490).

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

401355198 is a wasteful number, since it uses less digits than its factorization.

401355198 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 969488 (or 969485 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 36.

The square root of 401355198 is about 20033.8513022334. The cubic root of 401355198 is about 737.6374604639.

The spelling of 401355198 in words is "four hundred one million, three hundred fifty-five thousand, one hundred ninety-eight".