39548879161 has 27 divisors (see below), whose sum is σ = 44152404079. Its totient is φ = 35398682000.

The previous prime is 39548879129. The next prime is 39548879179. The reversal of 39548879161 is 16197884593.

The square root of 39548879161 is 198869.

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

It can be written as a sum of positive squares in only one way, i.e., 37998094761 + 1550784400 = 194931^2 + 39380^2 .

It is not a de Polignac number, because 39548879161 - 2⁵ = 39548879129 is a prime.

It is a super-2 number, since 2×39548879161² (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 39548879161.

It is not an unprimeable number, because it can be changed into a prime (39548879261) 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, 220943370 + ... + 220943548.

Almost surely, 2^39548879161 is an apocalyptic number.

39548879161 is the 198869-th square number.

39548879161 is the 99435-th centered octagonal number.

It is an amenable number.

39548879161 is a deficient number, since it is larger than the sum of its proper divisors (4603524918).

39548879161 is an equidigital number, since it uses as much as digits as its factorization.

39548879161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 582 (or 291 counting only the distinct ones).

The product of its digits is 13063680, while the sum is 61.

The spelling of 39548879161 in words is "thirty-nine billion, five hundred forty-eight million, eight hundred seventy-nine thousand, one hundred sixty-one".