40991024 has 20 divisors (see below), whose sum is σ = 80724000. Its totient is φ = 20159040.

The previous prime is 40991009. The next prime is 40991047. The reversal of 40991024 is 42019904.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20024 + ... + 21975.

It is an arithmetic number, because the mean of its divisors is an integer number (4036200).

Almost surely, 2^40991024 is an apocalyptic number.

It is an amenable number.

40991024 is a deficient number, since it is larger than the sum of its proper divisors (39732976).

40991024 is a wasteful number, since it uses less digits than its factorization.

40991024 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42068 (or 42062 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 29.

The square root of 40991024 is about 6402.4232912234. The cubic root of 40991024 is about 344.7965586262.

The spelling of 40991024 in words is "forty million, nine hundred ninety-one thousand, twenty-four".