79293649 has 2 divisors, whose sum is σ = 79293650. Its totient is φ = 79293648.

The previous prime is 79293647. The next prime is 79293679. The reversal of 79293649 is 94639297.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 55234624 + 24059025 = 7432^2 + 4905^2 .

It is an emirp because it is prime and its reverse (94639297) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 79293649 - 2¹ = 79293647 is a prime.

Together with 79293647, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (79293647) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39646824 + 39646825.

It is an arithmetic number, because the mean of its divisors is an integer number (39646825).

Almost surely, 2^79293649 is an apocalyptic number.

It is an amenable number.

79293649 is a deficient number, since it is larger than the sum of its proper divisors (1).

79293649 is an equidigital number, since it uses as much as digits as its factorization.

79293649 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 734832, while the sum is 49.

The square root of 79293649 is about 8904.6981419922. The cubic root of 79293649 is about 429.6150313285.

The spelling of 79293649 in words is "seventy-nine million, two hundred ninety-three thousand, six hundred forty-nine".