39986348892 has 96 divisors (see below), whose sum is σ = 108660056064. Its totient is φ = 11208844800.

The previous prime is 39986348887. The next prime is 39986348903. The reversal of 39986348892 is 29884368993.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1154142 + ... + 1188282.

It is an arithmetic number, because the mean of its divisors is an integer number (1131875584).

Almost surely, 2^39986348892 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 39986348892, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (54330028032).

39986348892 is an abundant number, since it is smaller than the sum of its proper divisors (68673707172).

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

39986348892 is a wasteful number, since it uses less digits than its factorization.

39986348892 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34419 (or 34417 counting only the distinct ones).

The product of its digits is 161243136, while the sum is 69.

The spelling of 39986348892 in words is "thirty-nine billion, nine hundred eighty-six million, three hundred forty-eight thousand, eight hundred ninety-two".