79639062449 has 2 divisors, whose sum is σ = 79639062450. Its totient is φ = 79639062448.

The previous prime is 79639062401. The next prime is 79639062497. The reversal of 79639062449 is 94426093697.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (79639062401) and next prime (79639062497).

It can be written as a sum of positive squares in only one way, i.e., 44816890000 + 34822172449 = 211700^2 + 186607^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-79639062449 is a prime.

It is not a weakly prime, because it can be changed into another prime (79639662449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39819531224 + 39819531225.

It is an arithmetic number, because the mean of its divisors is an integer number (39819531225).

Almost surely, 2^79639062449 is an apocalyptic number.

It is an amenable number.

79639062449 is a deficient number, since it is larger than the sum of its proper divisors (1).

79639062449 is an equidigital number, since it uses as much as digits as its factorization.

79639062449 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17635968, while the sum is 59.

The spelling of 79639062449 in words is "seventy-nine billion, six hundred thirty-nine million, sixty-two thousand, four hundred forty-nine".