39499745136 has 40 divisors (see below), whose sum is σ = 102122213760. Its totient is φ = 13156103616.

The previous prime is 39499745119. The next prime is 39499745141. The reversal of 39499745136 is 63154799493.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 39499745136.

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 7 ways as a sum of consecutive naturals, for example, 266380 + ... + 387243.

It is an arithmetic number, because the mean of its divisors is an integer number (2553055344).

Almost surely, 2^39499745136 is an apocalyptic number.

It is an amenable number.

39499745136 is an abundant number, since it is smaller than the sum of its proper divisors (62622468624).

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

39499745136 is a wasteful number, since it uses less digits than its factorization.

39499745136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 654893 (or 654887 counting only the distinct ones).

The product of its digits is 22044960, while the sum is 60.

The spelling of 39499745136 in words is "thirty-nine billion, four hundred ninety-nine million, seven hundred forty-five thousand, one hundred thirty-six".