79744849 has 2 divisors, whose sum is σ = 79744850. Its totient is φ = 79744848.

The previous prime is 79744829. The next prime is 79744859. The reversal of 79744849 is 94844797.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 74080449 + 5664400 = 8607^2 + 2380^2 .

It is a cyclic number.

It is not a de Polignac number, because 79744849 - 2⁵ = 79744817 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 79744796 and 79744805.

It is not a weakly prime, because it can be changed into another prime (79744829) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39872424 + 39872425.

It is an arithmetic number, because the mean of its divisors is an integer number (39872425).

Almost surely, 2^79744849 is an apocalyptic number.

It is an amenable number.

79744849 is a deficient number, since it is larger than the sum of its proper divisors (1).

79744849 is an equidigital number, since it uses as much as digits as its factorization.

79744849 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2032128, while the sum is 52.

The square root of 79744849 is about 8929.9971444564. The cubic root of 79744849 is about 430.4283616631.

Subtracting from 79744849 its sum of digits (52), we obtain a palindrome (79744797).

The spelling of 79744849 in words is "seventy-nine million, seven hundred forty-four thousand, eight hundred forty-nine".