79896643 has 2 divisors, whose sum is σ = 79896644. Its totient is φ = 79896642.

The previous prime is 79896559. The next prime is 79896701. The reversal of 79896643 is 34669897.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 79896643 - 2¹³ = 79888451 is a prime.

It is not a weakly prime, because it can be changed into another prime (79896343) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39948321 + 39948322.

It is an arithmetic number, because the mean of its divisors is an integer number (39948322).

Almost surely, 2^79896643 is an apocalyptic number.

79896643 is a deficient number, since it is larger than the sum of its proper divisors (1).

79896643 is an equidigital number, since it uses as much as digits as its factorization.

79896643 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1959552, while the sum is 52.

The square root of 79896643 is about 8938.4922106584. The cubic root of 79896643 is about 430.7012947802.

The spelling of 79896643 in words is "seventy-nine million, eight hundred ninety-six thousand, six hundred forty-three".