401355444 has 24 divisors (see below), whose sum is σ = 1070281408. Its totient is φ = 114672960.

The previous prime is 401355439. The next prime is 401355473. The reversal of 401355444 is 444553104.

It is a super-2 number, since 2×401355444² = 322172384856874272, 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 7 ways as a sum of consecutive naturals, for example, 2388937 + ... + 2389104.

Almost surely, 2^401355444 is an apocalyptic number.

It is an amenable number.

401355444 is an abundant number, since it is smaller than the sum of its proper divisors (668925964).

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

401355444 is a wasteful number, since it uses less digits than its factorization.

401355444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4778055 (or 4778053 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 30.

The square root of 401355444 is about 20033.8574418408. The cubic root of 401355444 is about 737.6376111690.

The spelling of 401355444 in words is "four hundred one million, three hundred fifty-five thousand, four hundred forty-four".