39969522252 has 240 divisors, whose sum is σ = 118435806720. Its totient is φ = 11643004800.

The previous prime is 39969522227. The next prime is 39969522287. The reversal of 39969522252 is 25222596993.

39969522252 is a `hidden beast` number, since 3 + 9 + 9 + 69 + 522 + 2 + 52 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 28008763 + ... + 28010189.

It is an arithmetic number, because the mean of its divisors is an integer number (493482528).

Almost surely, 2^39969522252 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 39969522252, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (59217903360).

39969522252 is an abundant number, since it is smaller than the sum of its proper divisors (78466284468).

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

39969522252 is a wasteful number, since it uses less digits than its factorization.

39969522252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1754 (or 1743 counting only the distinct ones).

The product of its digits is 5248800, while the sum is 54.

The spelling of 39969522252 in words is "thirty-nine billion, nine hundred sixty-nine million, five hundred twenty-two thousand, two hundred fifty-two".