79995287 has 2 divisors, whose sum is σ = 79995288. Its totient is φ = 79995286.

The previous prime is 79995277. The next prime is 79995313. The reversal of 79995287 is 78259997.

It is a weak prime.

It is an emirp because it is prime and its reverse (78259997) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 79995287 - 2⁴ = 79995271 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (79995257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39997643 + 39997644.

It is an arithmetic number, because the mean of its divisors is an integer number (39997644).

Almost surely, 2^79995287 is an apocalyptic number.

79995287 is a deficient number, since it is larger than the sum of its proper divisors (1).

79995287 is an equidigital number, since it uses as much as digits as its factorization.

79995287 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2857680, while the sum is 56.

The square root of 79995287 is about 8944.0084414093. The cubic root of 79995287 is about 430.8784762980.

The spelling of 79995287 in words is "seventy-nine million, nine hundred ninety-five thousand, two hundred eighty-seven".