40499968 has 36 divisors (see below), whose sum is σ = 81273528. Its totient is φ = 20142080.

The previous prime is 40499939. The next prime is 40499983. The reversal of 40499968 is 86999404.

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, 71655 + ... + 72217.

It is an arithmetic number, because the mean of its divisors is an integer number (2257598).

Almost surely, 2^40499968 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40499968, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40636764).

40499968 is an abundant number, since it is smaller than the sum of its proper divisors (40773560).

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

40499968 is an equidigital number, since it uses as much as digits as its factorization.

40499968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 860 (or 846 counting only the distinct ones).

The product of its (nonzero) digits is 559872, while the sum is 49.

The square root of 40499968 is about 6363.9585165210. The cubic root of 40499968 is about 343.4141823194.

The spelling of 40499968 in words is "forty million, four hundred ninety-nine thousand, nine hundred sixty-eight".