39397952880 has 1600 divisors, whose sum is σ = 177223406976. Its totient is φ = 7962624000.

The previous prime is 39397952857. The next prime is 39397952887. The reversal of 39397952880 is 8825979393.

39397952880 is a `hidden beast` number, since 3 + 9 + 39 + 79 + 528 + 8 + 0 = 666.

It is a super-2 number, since 2×39397952880² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39397952887) by changing a digit.

It is a polite number, since it can be written in 319 ways as a sum of consecutive naturals, for example, 645868050 + ... + 645868110.

Almost surely, 2^39397952880 is an apocalyptic number.

39397952880 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 39397952880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (88611703488).

39397952880 is an abundant number, since it is smaller than the sum of its proper divisors (137825454096).

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

39397952880 is a wasteful number, since it uses less digits than its factorization.

39397952880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 168 (or 153 counting only the distinct ones).

The product of its (nonzero) digits is 29393280, while the sum is 63.

The spelling of 39397952880 in words is "thirty-nine billion, three hundred ninety-seven million, nine hundred fifty-two thousand, eight hundred eighty".