40111900 has 18 divisors (see below), whose sum is σ = 87043040. Its totient is φ = 16044720.

The previous prime is 40111879. The next prime is 40111909. The reversal of 40111900 is 911104.

It is a happy number.

It is a super-2 number, since 2×40111900² = 3217929043220000, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40111909) 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 5 ways as a sum of consecutive naturals, for example, 200460 + ... + 200659.

Almost surely, 2^40111900 is an apocalyptic number.

It is an amenable number.

40111900 is an abundant number, since it is smaller than the sum of its proper divisors (46931140).

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

40111900 is a wasteful number, since it uses less digits than its factorization.

40111900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 401133 (or 401126 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 16.

The square root of 40111900 is about 6333.3956137289. The cubic root of 40111900 is about 342.3138029267.

The spelling of 40111900 in words is "forty million, one hundred eleven thousand, nine hundred".