79425449 has 2 divisors, whose sum is σ = 79425450. Its totient is φ = 79425448.

The previous prime is 79425433. The next prime is 79425457. The reversal of 79425449 is 94452497.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 66716224 + 12709225 = 8168^2 + 3565^2 .

It is a cyclic number.

It is not a de Polignac number, because 79425449 - 2⁴ = 79425433 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (79425349) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39712724 + 39712725.

It is an arithmetic number, because the mean of its divisors is an integer number (39712725).

Almost surely, 2^79425449 is an apocalyptic number.

It is an amenable number.

79425449 is a deficient number, since it is larger than the sum of its proper divisors (1).

79425449 is an equidigital number, since it uses as much as digits as its factorization.

79425449 is an evil number, because the sum of its binary digits is even.

The product of its digits is 362880, while the sum is 44.

The square root of 79425449 is about 8912.0956570270. The cubic root of 79425449 is about 429.8529314974.

The spelling of 79425449 in words is "seventy-nine million, four hundred twenty-five thousand, four hundred forty-nine".