79087999 has 2 divisors, whose sum is σ = 79088000. Its totient is φ = 79087998.

The previous prime is 79087997. The next prime is 79088021. The reversal of 79087999 is 99978097.

It is a weak prime.

It is an emirp because it is prime and its reverse (99978097) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 79087999 - 2¹ = 79087997 is a prime.

Together with 79087997, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (79087993) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39543999 + 39544000.

It is an arithmetic number, because the mean of its divisors is an integer number (39544000).

Almost surely, 2^79087999 is an apocalyptic number.

79087999 is a deficient number, since it is larger than the sum of its proper divisors (1).

79087999 is an equidigital number, since it uses as much as digits as its factorization.

79087999 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2571912, while the sum is 58.

The square root of 79087999 is about 8893.1433700351. The cubic root of 79087999 is about 429.2433041174.

The spelling of 79087999 in words is "seventy-nine million, eighty-seven thousand, nine hundred ninety-nine".