79387007049 has 27 divisors (see below), whose sum is σ = 133401716487. Its totient is φ = 45360622944.

The previous prime is 79387007009. The next prime is 79387007057. The reversal of 79387007049 is 94070078397.

The square root of 79387007049 is 281757.

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., 29761425225 + 49625581824 = 172515^2 + 222768^2 .

It is not a de Polignac number, because 79387007049 - 2³³ = 70797072457 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 79387006986 and 79387007004.

It is not an unprimeable number, because it can be changed into a prime (79387007009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 5910189 + ... + 5923605.

Almost surely, 2^79387007049 is an apocalyptic number.

79387007049 is the 281757-th square number.

79387007049 is the 140879-th centered octagonal number.

It is an amenable number.

79387007049 is a deficient number, since it is larger than the sum of its proper divisors (54014709438).

79387007049 is an frugal number, since it uses more digits than its factorization.

79387007049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26854 (or 13427 counting only the distinct ones).

The product of its (nonzero) digits is 2667168, while the sum is 54.

The spelling of 79387007049 in words is "seventy-nine billion, three hundred eighty-seven million, seven thousand, forty-nine".