79552969 has 2 divisors, whose sum is σ = 79552970. Its totient is φ = 79552968.

The previous prime is 79552961. The next prime is 79552973. The reversal of 79552969 is 96925597.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 70761744 + 8791225 = 8412^2 + 2965^2 .

It is an emirp because it is prime and its reverse (96925597) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 79552969 - 2³ = 79552961 is a prime.

It is a super-2 number, since 2×79552969² = 12657349753429922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (79552961) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39776484 + 39776485.

It is an arithmetic number, because the mean of its divisors is an integer number (39776485).

Almost surely, 2^79552969 is an apocalyptic number.

It is an amenable number.

79552969 is a deficient number, since it is larger than the sum of its proper divisors (1).

79552969 is an equidigital number, since it uses as much as digits as its factorization.

79552969 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1530900, while the sum is 52.

The square root of 79552969 is about 8919.2471094818. The cubic root of 79552969 is about 430.0828558562.

The spelling of 79552969 in words is "seventy-nine million, five hundred fifty-two thousand, nine hundred sixty-nine".