40219900 has 36 divisors (see below), whose sum is σ = 99747088. Its totient is φ = 13789440.

The previous prime is 40219889. The next prime is 40219913. The reversal of 40219900 is 991204.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 28029 + ... + 29428.

Almost surely, 2^40219900 is an apocalyptic number.

It is an amenable number.

40219900 is an abundant number, since it is smaller than the sum of its proper divisors (59527188).

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

40219900 is a wasteful number, since it uses less digits than its factorization.

40219900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57478 (or 57471 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 25.

The square root of 40219900 is about 6341.9161142355. The cubic root of 40219900 is about 342.6207505754.

It can be divided in two parts, 402 and 19900, that added together give a palindrome (20302).

The spelling of 40219900 in words is "forty million, two hundred nineteen thousand, nine hundred".