40229878 has 64 divisors (see below), whose sum is σ = 73543680. Its totient is φ = 16329600.

The previous prime is 40229863. The next prime is 40229887. The reversal of 40229878 is 87892204.

It is a self number, because there is not a number n which added to its sum of digits gives 40229878.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 566583 + ... + 566653.

It is an arithmetic number, because the mean of its divisors is an integer number (1149120).

Almost surely, 2^40229878 is an apocalyptic number.

40229878 is a deficient number, since it is larger than the sum of its proper divisors (33313802).

40229878 is a wasteful number, since it uses less digits than its factorization.

40229878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 173.

The product of its (nonzero) digits is 64512, while the sum is 40.

The square root of 40229878 is about 6342.7027362158. The cubic root of 40229878 is about 342.6490813866.

The spelling of 40229878 in words is "forty million, two hundred twenty-nine thousand, eight hundred seventy-eight".