79302889 has 2 divisors, whose sum is σ = 79302890. Its totient is φ = 79302888.

The previous prime is 79302887. The next prime is 79302901. The reversal of 79302889 is 98820397.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 79067664 + 235225 = 8892^2 + 485^2 .

It is a cyclic number.

It is not a de Polignac number, because 79302889 - 2¹ = 79302887 is a prime.

Together with 79302887, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (79302887) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39651444 + 39651445.

It is an arithmetic number, because the mean of its divisors is an integer number (39651445).

Almost surely, 2^79302889 is an apocalyptic number.

It is an amenable number.

79302889 is a deficient number, since it is larger than the sum of its proper divisors (1).

79302889 is an equidigital number, since it uses as much as digits as its factorization.

79302889 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 217728, while the sum is 46.

The square root of 79302889 is about 8905.2169541230. The cubic root of 79302889 is about 429.6317181996.

The spelling of 79302889 in words is "seventy-nine million, three hundred two thousand, eight hundred eighty-nine".