40386639204 has 30 divisors (see below), whose sum is σ = 105578653334. Its totient is φ = 13462212960.

The previous prime is 40386639157. The next prime is 40386639239. The reversal of 40386639204 is 40293668304.

40386639204 is a `hidden beast` number, since 4 + 0 + 3 + 8 + 6 + 639 + 2 + 0 + 4 = 666.

It can be written as a sum of positive squares in only one way, i.e., 35619012900 + 4767626304 = 188730^2 + 69048^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 40386639204.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 62324737 + ... + 62325384.

Almost surely, 2^40386639204 is an apocalyptic number.

It is an amenable number.

40386639204 is an abundant number, since it is smaller than the sum of its proper divisors (65192014130).

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

40386639204 is a wasteful number, since it uses less digits than its factorization.

40386639204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124650137 (or 124650126 counting only the distinct ones).

The product of its (nonzero) digits is 746496, while the sum is 45.

The spelling of 40386639204 in words is "forty billion, three hundred eighty-six million, six hundred thirty-nine thousand, two hundred four".