79700045 has 4 divisors (see below), whose sum is σ = 95640060. Its totient is φ = 63760032.

The previous prime is 79699999. The next prime is 79700053. The reversal of 79700045 is 54000797.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 54000797 = 37 ⋅1459481.

It can be written as a sum of positive squares in 2 ways, for example, as 30096196 + 49603849 = 5486^2 + 7043^2 .

It is a cyclic number.

It is not a de Polignac number, because 79700045 - 2⁶ = 79699981 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 79699984 and 79700020.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7970000 + ... + 7970009.

It is an arithmetic number, because the mean of its divisors is an integer number (23910015).

Almost surely, 2^79700045 is an apocalyptic number.

It is an amenable number.

79700045 is a deficient number, since it is larger than the sum of its proper divisors (15940015).

79700045 is a wasteful number, since it uses less digits than its factorization.

79700045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15940014.

The product of its (nonzero) digits is 8820, while the sum is 32.

The square root of 79700045 is about 8927.4881685724. The cubic root of 79700045 is about 430.3477356608.

The spelling of 79700045 in words is "seventy-nine million, seven hundred thousand, forty-five".