79627969 has 4 divisors (see below), whose sum is σ = 79725780. Its totient is φ = 79530160.

The previous prime is 79627967. The next prime is 79627981. The reversal of 79627969 is 96972697.

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

It can be written as a sum of positive squares in 2 ways, for example, as 27615025 + 52012944 = 5255^2 + 7212^2 .

It is a cyclic number.

It is not a de Polignac number, because 79627969 - 2¹ = 79627967 is a prime.

It is a super-2 number, since 2×79627969² = 12681226894129922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (79627967) 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 3 ways as a sum of consecutive naturals, for example, 47674 + ... + 49315.

It is an arithmetic number, because the mean of its divisors is an integer number (19931445).

Almost surely, 2^79627969 is an apocalyptic number.

It is an amenable number.

79627969 is a deficient number, since it is larger than the sum of its proper divisors (97811).

79627969 is an equidigital number, since it uses as much as digits as its factorization.

79627969 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97810.

The product of its digits is 2571912, while the sum is 55.

The square root of 79627969 is about 8923.4505097524. The cubic root of 79627969 is about 430.2179695346.

It can be divided in two parts, 7962 and 7969, that added together give a triangular number (15931 = T₁₇₈).

The spelling of 79627969 in words is "seventy-nine million, six hundred twenty-seven thousand, nine hundred sixty-nine".