79301987 has 2 divisors, whose sum is σ = 79301988. Its totient is φ = 79301986.

The previous prime is 79301983. The next prime is 79302001. The reversal of 79301987 is 78910397.

It is a weak prime.

It is an emirp because it is prime and its reverse (78910397) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 79301987 - 2² = 79301983 is a prime.

It is not a weakly prime, because it can be changed into another prime (79301983) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39650993 + 39650994.

It is an arithmetic number, because the mean of its divisors is an integer number (39650994).

Almost surely, 2^79301987 is an apocalyptic number.

79301987 is a deficient number, since it is larger than the sum of its proper divisors (1).

79301987 is an equidigital number, since it uses as much as digits as its factorization.

79301987 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 95256, while the sum is 44.

The square root of 79301987 is about 8905.1663095082. The cubic root of 79301987 is about 429.6300893003.

The spelling of 79301987 in words is "seventy-nine million, three hundred one thousand, nine hundred eighty-seven".