40149912 has 32 divisors (see below), whose sum is σ = 109500480. Its totient is φ = 12166560.

The previous prime is 40149911. The next prime is 40149953. The reversal of 40149912 is 21994104.

It is a super-2 number, since 2×40149912² = 3224030867215488, which contains 22 as substring.

It is a Smith number, since the sum of its digits (30) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 40149912.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40149911) 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 7 ways as a sum of consecutive naturals, for example, 75778 + ... + 76305.

It is an arithmetic number, because the mean of its divisors is an integer number (3421890).

Almost surely, 2^40149912 is an apocalyptic number.

It is an amenable number.

40149912 is an abundant number, since it is smaller than the sum of its proper divisors (69350568).

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

40149912 is a wasteful number, since it uses less digits than its factorization.

40149912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 152103 (or 152099 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 30.

The square root of 40149912 is about 6336.3958209695. The cubic root of 40149912 is about 342.4218998934.

The spelling of 40149912 in words is "forty million, one hundred forty-nine thousand, nine hundred twelve".