401115144 has 64 divisors (see below), whose sum is σ = 1021377600. Its totient is φ = 131245056.

The previous prime is 401115133. The next prime is 401115151. The reversal of 401115144 is 441511104.

It is a super-2 number, since 2×401115144² = 321786717492281472, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 401115144.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 495412 + ... + 496220.

It is an arithmetic number, because the mean of its divisors is an integer number (15959025).

Almost surely, 2^401115144 is an apocalyptic number.

It is an amenable number.

401115144 is an abundant number, since it is smaller than the sum of its proper divisors (620262456).

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

401115144 is a wasteful number, since it uses less digits than its factorization.

401115144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1174 (or 1170 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 21.

The square root of 401115144 is about 20027.8591966291. The cubic root of 401115144 is about 737.4903686954.

Adding to 401115144 its reverse (441511104), we get a palindrome (842626248).

The spelling of 401115144 in words is "four hundred one million, one hundred fifteen thousand, one hundred forty-four".