79452869 has 2 divisors, whose sum is σ = 79452870. Its totient is φ = 79452868.

The previous prime is 79452847. The next prime is 79452911. The reversal of 79452869 is 96825497.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 56776225 + 22676644 = 7535^2 + 4762^2 .

It is a cyclic number.

It is not a de Polignac number, because 79452869 - 2⁸ = 79452613 is a prime.

It is a super-2 number, since 2×79452869² = 12625516784662322, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (79452809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39726434 + 39726435.

It is an arithmetic number, because the mean of its divisors is an integer number (39726435).

Almost surely, 2^79452869 is an apocalyptic number.

It is an amenable number.

79452869 is a deficient number, since it is larger than the sum of its proper divisors (1).

79452869 is an equidigital number, since it uses as much as digits as its factorization.

79452869 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1088640, while the sum is 50.

The square root of 79452869 is about 8913.6338829907. The cubic root of 79452869 is about 429.9023917624.

The spelling of 79452869 in words is "seventy-nine million, four hundred fifty-two thousand, eight hundred sixty-nine".