38479922569 has 27 divisors (see below), whose sum is σ = 44973345781. Its totient is φ = 32892611840.

The previous prime is 38479922567. The next prime is 38479922573. The reversal of 38479922569 is 96522997483.

The square root of 38479922569 is 196163.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 18680055625 + 19799866944 = 136675^2 + 140712^2 .

It is not a de Polignac number, because 38479922569 - 2¹ = 38479922567 is a prime.

It is a super-2 number, since 2×38479922569² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 38479922569.

It is not an unprimeable number, because it can be changed into a prime (38479922561) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 36681957 + ... + 36683005.

Almost surely, 2^38479922569 is an apocalyptic number.

38479922569 is the 196163-rd square number.

38479922569 is the 98082-nd centered octagonal number.

It is an amenable number.

38479922569 is a deficient number, since it is larger than the sum of its proper divisors (6493423212).

38479922569 is an equidigital number, since it uses as much as digits as its factorization.

38479922569 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2154 (or 1077 counting only the distinct ones).

The product of its digits is 58786560, while the sum is 64.

Multiplying 38479922569 by its sum of digits (64), we get a square (2462715044416 = 1569304²).

The spelling of 38479922569 in words is "thirty-eight billion, four hundred seventy-nine million, nine hundred twenty-two thousand, five hundred sixty-nine".