40291944 has 64 divisors (see below), whose sum is σ = 125591040. Its totient is φ = 10464960.

The previous prime is 40291939. The next prime is 40291961. The reversal of 40291944 is 44919204.

40291944 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9054 + ... + 12749.

It is an arithmetic number, because the mean of its divisors is an integer number (1962360).

Almost surely, 2^40291944 is an apocalyptic number.

40291944 is a gapful number since it is divisible by the number (44) formed by its first and last digit.

It is an amenable number.

40291944 is an abundant number, since it is smaller than the sum of its proper divisors (85299096).

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

40291944 is a wasteful number, since it uses less digits than its factorization.

40291944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21830 (or 21826 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 33.

The square root of 40291944 is about 6347.5935597674. The cubic root of 40291944 is about 342.8252019848.

The spelling of 40291944 in words is "forty million, two hundred ninety-one thousand, nine hundred forty-four".