40869900 has 72 divisors (see below), whose sum is σ = 131397840. Its totient is φ = 10897920.

The previous prime is 40869889. The next prime is 40869901. The reversal of 40869900 is 996804.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (40869901) 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 23 ways as a sum of consecutive naturals, for example, 4869 + ... + 10268.

It is an arithmetic number, because the mean of its divisors is an integer number (1824970).

Almost surely, 2^40869900 is an apocalyptic number.

It is an amenable number.

40869900 is an abundant number, since it is smaller than the sum of its proper divisors (90527940).

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

40869900 is a wasteful number, since it uses less digits than its factorization.

40869900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15160 (or 15147 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 36.

The square root of 40869900 is about 6392.9570622678. The cubic root of 40869900 is about 344.4566115099.

The spelling of 40869900 in words is "forty million, eight hundred sixty-nine thousand, nine hundred".