79243663 has 2 divisors, whose sum is σ = 79243664. Its totient is φ = 79243662.

The previous prime is 79243651. The next prime is 79243687. The reversal of 79243663 is 36634297.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-79243663 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (79243643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39621831 + 39621832.

It is an arithmetic number, because the mean of its divisors is an integer number (39621832).

Almost surely, 2^79243663 is an apocalyptic number.

79243663 is a deficient number, since it is larger than the sum of its proper divisors (1).

79243663 is an equidigital number, since it uses as much as digits as its factorization.

79243663 is an evil number, because the sum of its binary digits is even.

The product of its digits is 163296, while the sum is 40.

The square root of 79243663 is about 8901.8909788876. The cubic root of 79243663 is about 429.5247372074.

The spelling of 79243663 in words is "seventy-nine million, two hundred forty-three thousand, six hundred sixty-three".