401444004 has 24 divisors (see below), whose sum is σ = 1008757120. Its totient is φ = 123521184.

The previous prime is 401443981. The next prime is 401444041. The reversal of 401444004 is 400444104.

It is a super-2 number, since 2×401444004² = 322314576695104032, which contains 22 as substring.

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, 1286524 + ... + 1286835.

Almost surely, 2^401444004 is an apocalyptic number.

It is an amenable number.

401444004 is an abundant number, since it is smaller than the sum of its proper divisors (607313116).

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

401444004 is a wasteful number, since it uses less digits than its factorization.

401444004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2573379 (or 2573377 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 21.

The square root of 401444004 is about 20036.0675782450. The cubic root of 401444004 is about 737.6918609898.

Adding to 401444004 its reverse (400444104), we get a palindrome (801888108).

The spelling of 401444004 in words is "four hundred one million, four hundred forty-four thousand, four".