401159439 has 24 divisors (see below), whose sum is σ = 610863120. Its totient is φ = 260187552.

The previous prime is 401159419. The next prime is 401159441. The reversal of 401159439 is 934951104.

It is a happy number.

It is not a de Polignac number, because 401159439 - 2¹² = 401155343 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (401159419) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 31537 + ... + 42389.

It is an arithmetic number, because the mean of its divisors is an integer number (25452630).

Almost surely, 2^401159439 is an apocalyptic number.

401159439 is a deficient number, since it is larger than the sum of its proper divisors (209703681).

401159439 is a wasteful number, since it uses less digits than its factorization.

401159439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10936 (or 10893 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 36.

The square root of 401159439 is about 20028.9650007183. The cubic root of 401159439 is about 737.5175146276.

The spelling of 401159439 in words is "four hundred one million, one hundred fifty-nine thousand, four hundred thirty-nine".