79020045 has 24 divisors (see below), whose sum is σ = 147505176. Its totient is φ = 38901888.

The previous prime is 79020043. The next prime is 79020059. The reversal of 79020045 is 54002097.

It can be written as a sum of positive squares in 4 ways, for example, as 59049 + 78960996 = 243^2 + 8886^2 .

It is not a de Polignac number, because 79020045 - 2¹ = 79020043 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79020043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 66954 + ... + 68123.

It is an arithmetic number, because the mean of its divisors is an integer number (6146049).

Almost surely, 2^79020045 is an apocalyptic number.

It is an amenable number.

79020045 is a deficient number, since it is larger than the sum of its proper divisors (68485131).

79020045 is a wasteful number, since it uses less digits than its factorization.

79020045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135101 (or 135098 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 27.

The square root of 79020045 is about 8889.3219651445. The cubic root of 79020045 is about 429.1203307291.

The spelling of 79020045 in words is "seventy-nine million, twenty thousand, forty-five".