79780059 has 24 divisors (see below), whose sum is σ = 119923440. Its totient is φ = 53001216.

The previous prime is 79780039. The next prime is 79780061. The reversal of 79780059 is 95008797.

It is not a de Polignac number, because 79780059 - 2⁹ = 79779547 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 79779996 and 79780023.

It is not an unprimeable number, because it can be changed into a prime (79780039) 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, 137979 + ... + 138555.

It is an arithmetic number, because the mean of its divisors is an integer number (4996810).

Almost surely, 2^79780059 is an apocalyptic number.

79780059 is a deficient number, since it is larger than the sum of its proper divisors (40143381).

79780059 is an equidigital number, since it uses as much as digits as its factorization.

79780059 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1161 (or 1149 counting only the distinct ones).

The product of its (nonzero) digits is 158760, while the sum is 45.

The square root of 79780059 is about 8931.9683720891. The cubic root of 79780059 is about 430.4917018153.

The spelling of 79780059 in words is "seventy-nine million, seven hundred eighty thousand, fifty-nine".