401455404 has 72 divisors (see below), whose sum is σ = 1163355648. Its totient is φ = 114346080.

The previous prime is 401455399. The next prime is 401455421. The reversal of 401455404 is 404554104.

It is a super-2 number, since 2×401455404² = 322332882801606432, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 85149 + ... + 89739.

Almost surely, 2^401455404 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 401455404, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (581677824).

401455404 is an abundant number, since it is smaller than the sum of its proper divisors (761900244).

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

401455404 is a wasteful number, since it uses less digits than its factorization.

401455404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4955 (or 4950 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 27.

The square root of 401455404 is about 20036.3520631876. The cubic root of 401455404 is about 737.6988437881.

The spelling of 401455404 in words is "four hundred one million, four hundred fifty-five thousand, four hundred four".