40076440 has 16 divisors (see below), whose sum is σ = 90172080. Its totient is φ = 16030560.

The previous prime is 40076389. The next prime is 40076441. The reversal of 40076440 is 4467004.

It is a happy number.

It is a super-2 number, since 2×40076440² = 3212242086147200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40076441) 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, 500916 + ... + 500995.

It is an arithmetic number, because the mean of its divisors is an integer number (5635755).

Almost surely, 2^40076440 is an apocalyptic number.

40076440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40076440 is an abundant number, since it is smaller than the sum of its proper divisors (50095640).

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

40076440 is a wasteful number, since it uses less digits than its factorization.

40076440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1001922 (or 1001918 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 25.

The square root of 40076440 is about 6330.5955486036. The cubic root of 40076440 is about 342.2129016470.

The spelling of 40076440 in words is "forty million, seventy-six thousand, four hundred forty".