979039987 has 2 divisors, whose sum is σ = 979039988. Its totient is φ = 979039986.

The previous prime is 979039981. The next prime is 979039993. The reversal of 979039987 is 789930979.

It is a balanced prime because it is at equal distance from previous prime (979039981) and next prime (979039993).

It is an emirp because it is prime and its reverse (789930979) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 979039987 - 2¹⁵ = 979007219 is a prime.

It is a super-2 number, since 2×979039987² = 1917038592289920338, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (979039981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 489519993 + 489519994.

It is an arithmetic number, because the mean of its divisors is an integer number (489519994).

Almost surely, 2^979039987 is an apocalyptic number.

979039987 is a deficient number, since it is larger than the sum of its proper divisors (1).

979039987 is an equidigital number, since it uses as much as digits as its factorization.

979039987 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7715736, while the sum is 61.

The square root of 979039987 is about 31289.6146828305. The cubic root of 979039987 is about 992.9639389544.

The spelling of 979039987 in words is "nine hundred seventy-nine million, thirty-nine thousand, nine hundred eighty-seven".