40979240 has 16 divisors (see below), whose sum is σ = 92203380. Its totient is φ = 16391680.

The previous prime is 40979227. The next prime is 40979243. The reversal of 40979240 is 4297904.

It can be written as a sum of positive squares in 2 ways, for example, as 38613796 + 2365444 = 6214^2 + 1538^2 .

It is a super-2 number, since 2×40979240² = 3358596221955200, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 40979240.

It is not an unprimeable number, because it can be changed into a prime (40979243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 512201 + ... + 512280.

Almost surely, 2^40979240 is an apocalyptic number.

40979240 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40979240 is an abundant number, since it is smaller than the sum of its proper divisors (51224140).

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

40979240 is a wasteful number, since it uses less digits than its factorization.

40979240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1024492 (or 1024488 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 35.

The square root of 40979240 is about 6401.5029485270. The cubic root of 40979240 is about 344.7635150338.

The spelling of 40979240 in words is "forty million, nine hundred seventy-nine thousand, two hundred forty".