401165144 has 16 divisors (see below), whose sum is σ = 756978000. Its totient is φ = 199304352.

The previous prime is 401165129. The next prime is 401165147. The reversal of 401165144 is 441561104.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (401165147) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 158444 + ... + 160955.

It is an arithmetic number, because the mean of its divisors is an integer number (47311125).

Almost surely, 2^401165144 is an apocalyptic number.

It is an amenable number.

401165144 is a deficient number, since it is larger than the sum of its proper divisors (355812856).

401165144 is a wasteful number, since it uses less digits than its factorization.

401165144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 319562 (or 319558 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 26.

The square root of 401165144 is about 20029.1074189540. The cubic root of 401165144 is about 737.5210107583.

The spelling of 401165144 in words is "four hundred one million, one hundred sixty-five thousand, one hundred forty-four".