79279469 has 2 divisors, whose sum is σ = 79279470. Its totient is φ = 79279468.

The previous prime is 79279463. The next prime is 79279477. The reversal of 79279469 is 96497297.

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., 53655625 + 25623844 = 7325^2 + 5062^2 .

It is a cyclic number.

It is not a de Polignac number, because 79279469 - 2¹⁶ = 79213933 is a prime.

It is a super-2 number, since 2×79279469² = 12570468409843922, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 79279469.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (79279463) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39639734 + 39639735.

It is an arithmetic number, because the mean of its divisors is an integer number (39639735).

Almost surely, 2^79279469 is an apocalyptic number.

It is an amenable number.

79279469 is a deficient number, since it is larger than the sum of its proper divisors (1).

79279469 is an equidigital number, since it uses as much as digits as its factorization.

79279469 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1714608, while the sum is 53.

The square root of 79279469 is about 8903.9018974829. The cubic root of 79279469 is about 429.5894206001.

The spelling of 79279469 in words is "seventy-nine million, two hundred seventy-nine thousand, four hundred sixty-nine".