40905100 has 36 divisors (see below), whose sum is σ = 93440200. Its totient is φ = 15500160.

The previous prime is 40905097. The next prime is 40905107. The reversal of 40905100 is 150904.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is not an unprimeable number, because it can be changed into a prime (40905107) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8865 + ... + 12664.

Almost surely, 2^40905100 is an apocalyptic number.

It is an amenable number.

40905100 is an abundant number, since it is smaller than the sum of its proper divisors (52535100).

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

40905100 is a wasteful number, since it uses less digits than its factorization.

40905100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21562 (or 21555 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 19.

The square root of 40905100 is about 6395.7094993441. The cubic root of 40905100 is about 344.5554731291. Note that the first 3 decimals are identical.

The spelling of 40905100 in words is "forty million, nine hundred five thousand, one hundred".