39749805056 has 88 divisors (see below), whose sum is σ = 88334502144. Its totient is φ = 17754071040.

The previous prime is 39749805041. The next prime is 39749805079. The reversal of 39749805056 is 65050894793.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 39749804992 and 39749805010.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 364511 + ... + 460833.

Almost surely, 2^39749805056 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 39749805056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (44167251072).

39749805056 is an abundant number, since it is smaller than the sum of its proper divisors (48584697088).

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

39749805056 is a wasteful number, since it uses less digits than its factorization.

39749805056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96387 (or 96369 counting only the distinct ones).

The product of its (nonzero) digits is 8164800, while the sum is 56.

The spelling of 39749805056 in words is "thirty-nine billion, seven hundred forty-nine million, eight hundred five thousand, fifty-six".