79969705 has 4 divisors (see below), whose sum is σ = 95963652. Its totient is φ = 63975760.

The previous prime is 79969699. The next prime is 79969711. The reversal of 79969705 is 50796997.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (79969699) and next prime (79969711).

It can be written as a sum of positive squares in 2 ways, for example, as 30239001 + 49730704 = 5499^2 + 7052^2 .

It is not a de Polignac number, because 79969705 - 2³ = 79969697 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 7996966 + ... + 7996975.

It is an arithmetic number, because the mean of its divisors is an integer number (23990913).

Almost surely, 2^79969705 is an apocalyptic number.

It is an amenable number.

79969705 is a deficient number, since it is larger than the sum of its proper divisors (15993947).

79969705 is a wasteful number, since it uses less digits than its factorization.

79969705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15993946.

The product of its (nonzero) digits is 1071630, while the sum is 52.

The square root of 79969705 is about 8942.5782076535. The cubic root of 79969705 is about 430.8325406402.

The spelling of 79969705 in words is "seventy-nine million, nine hundred sixty-nine thousand, seven hundred five".