401384165 has 32 divisors (see below), whose sum is σ = 594397440. Its totient is φ = 253384704.

The previous prime is 401384147. The next prime is 401384173. The reversal of 401384165 is 561483104.

It is a cyclic number.

It is not a de Polignac number, because 401384165 - 2⁸ = 401383909 is a prime.

It is a super-2 number, since 2×401384165² = 322218495825494450, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 211541 + ... + 213429.

It is an arithmetic number, because the mean of its divisors is an integer number (18574920).

Almost surely, 2^401384165 is an apocalyptic number.

It is an amenable number.

401384165 is a deficient number, since it is larger than the sum of its proper divisors (193013275).

401384165 is a wasteful number, since it uses less digits than its factorization.

401384165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2381.

The product of its (nonzero) digits is 11520, while the sum is 32.

The square root of 401384165 is about 20034.5742405473. The cubic root of 401384165 is about 737.6552058678.

The spelling of 401384165 in words is "four hundred one million, three hundred eighty-four thousand, one hundred sixty-five".