40477872 has 20 divisors (see below), whose sum is σ = 104567960. Its totient is φ = 13492608.

The previous prime is 40477859. The next prime is 40477891. The reversal of 40477872 is 27877404.

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 40477872.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 421597 + ... + 421692.

It is an arithmetic number, because the mean of its divisors is an integer number (5228398).

Almost surely, 2^40477872 is an apocalyptic number.

It is an amenable number.

40477872 is an abundant number, since it is smaller than the sum of its proper divisors (64090088).

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

40477872 is a wasteful number, since it uses less digits than its factorization.

40477872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 843300 (or 843294 counting only the distinct ones).

The product of its (nonzero) digits is 87808, while the sum is 39.

The square root of 40477872 is about 6362.2222532697. Note that the first 4 decimals coincide. The cubic root of 40477872 is about 343.3517175774.

The spelling of 40477872 in words is "forty million, four hundred seventy-seven thousand, eight hundred seventy-two".