79487449 has 2 divisors, whose sum is σ = 79487450. Its totient is φ = 79487448.

The previous prime is 79487399. The next prime is 79487497. The reversal of 79487449 is 94478497.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 71825625 + 7661824 = 8475^2 + 2768^2 .

It is a cyclic number.

It is not a de Polignac number, because 79487449 - 2¹⁷ = 79356377 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 79487396 and 79487405.

It is not a weakly prime, because it can be changed into another prime (79487549) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39743724 + 39743725.

It is an arithmetic number, because the mean of its divisors is an integer number (39743725).

Almost surely, 2^79487449 is an apocalyptic number.

It is an amenable number.

79487449 is a deficient number, since it is larger than the sum of its proper divisors (1).

79487449 is an equidigital number, since it uses as much as digits as its factorization.

79487449 is an odious number, because the sum of its binary digits is odd.

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

The square root of 79487449 is about 8915.5733971518. The cubic root of 79487449 is about 429.9647510316.

The spelling of 79487449 in words is "seventy-nine million, four hundred eighty-seven thousand, four hundred forty-nine".