79774249 has 2 divisors, whose sum is σ = 79774250. Its totient is φ = 79774248.

The previous prime is 79774241. The next prime is 79774267. The reversal of 79774249 is 94247797.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 46826649 + 32947600 = 6843^2 + 5740^2 .

It is a cyclic number.

It is not a de Polignac number, because 79774249 - 2³ = 79774241 is a prime.

It is not a weakly prime, because it can be changed into another prime (79774241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39887124 + 39887125.

It is an arithmetic number, because the mean of its divisors is an integer number (39887125).

Almost surely, 2^79774249 is an apocalyptic number.

It is an amenable number.

79774249 is a deficient number, since it is larger than the sum of its proper divisors (1).

79774249 is an equidigital number, since it uses as much as digits as its factorization.

79774249 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 889056, while the sum is 49.

The square root of 79774249 is about 8931.6431299062. The cubic root of 79774249 is about 430.4812513446.

The spelling of 79774249 in words is "seventy-nine million, seven hundred seventy-four thousand, two hundred forty-nine".