38956772439 has 24 divisors (see below), whose sum is σ = 60683837760. Its totient is φ = 23940004032.

The previous prime is 38956772423. The next prime is 38956772443. The reversal of 38956772439 is 93427765983.

38956772439 is a `hidden beast` number, since 3 + 89 + 56 + 7 + 72 + 439 = 666.

It is not a de Polignac number, because 38956772439 - 2⁴ = 38956772423 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38956772039) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 147424 + ... + 315669.

It is an arithmetic number, because the mean of its divisors is an integer number (2528493240).

Almost surely, 2^38956772439 is an apocalyptic number.

38956772439 is a gapful number since it is divisible by the number (39) formed by its first and last digit.

38956772439 is a deficient number, since it is larger than the sum of its proper divisors (21727065321).

38956772439 is a wasteful number, since it uses less digits than its factorization.

38956772439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 463831 (or 463828 counting only the distinct ones).

The product of its digits is 68584320, while the sum is 63.

The spelling of 38956772439 in words is "thirty-eight billion, nine hundred fifty-six million, seven hundred seventy-two thousand, four hundred thirty-nine".