39139165240 has 64 divisors (see below), whose sum is σ = 100836380160. Its totient is φ = 13393434240.

The previous prime is 39139165211. The next prime is 39139165243. The reversal of 39139165240 is 4256193193.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39139165243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12805 + ... + 280075.

It is an arithmetic number, because the mean of its divisors is an integer number (1575568440).

Almost surely, 2^39139165240 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 39139165240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (50418190080).

39139165240 is an abundant number, since it is smaller than the sum of its proper divisors (61697214920).

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

39139165240 is a wasteful number, since it uses less digits than its factorization.

39139165240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 267812 (or 267808 counting only the distinct ones).

The product of its (nonzero) digits is 174960, while the sum is 43.

The spelling of 39139165240 in words is "thirty-nine billion, one hundred thirty-nine million, one hundred sixty-five thousand, two hundred forty".