39420858136 has 192 divisors, whose sum is σ = 88326534240. Its totient is φ = 16419532800.

The previous prime is 39420858101. The next prime is 39420858157. The reversal of 39420858136 is 63185802493.

It is a self number, because there is not a number n which added to its sum of digits gives 39420858136.

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 47 ways as a sum of consecutive naturals, for example, 173660055 + ... + 173660281.

Almost surely, 2^39420858136 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 39420858136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (44163267120).

39420858136 is an abundant number, since it is smaller than the sum of its proper divisors (48905676104).

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

39420858136 is a wasteful number, since it uses less digits than its factorization.

39420858136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 506 (or 491 counting only the distinct ones).

The product of its (nonzero) digits is 1244160, while the sum is 49.

The spelling of 39420858136 in words is "thirty-nine billion, four hundred twenty million, eight hundred fifty-eight thousand, one hundred thirty-six".