40159312 has 20 divisors (see below), whose sum is σ = 81904480. Its totient is φ = 19022688.

The previous prime is 40159309. The next prime is 40159313. The reversal of 40159312 is 21395104.

It is a super-2 number, since 2×40159312² = 3225540680626688, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40159313) 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, 65748 + ... + 66355.

It is an arithmetic number, because the mean of its divisors is an integer number (4095224).

Almost surely, 2^40159312 is an apocalyptic number.

It is an amenable number.

40159312 is an abundant number, since it is smaller than the sum of its proper divisors (41745168).

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

40159312 is a wasteful number, since it uses less digits than its factorization.

40159312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132130 (or 132124 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 25.

The square root of 40159312 is about 6337.1375241508. The cubic root of 40159312 is about 342.4486207049.

The spelling of 40159312 in words is "forty million, one hundred fifty-nine thousand, three hundred twelve".