979980013 has 2 divisors, whose sum is σ = 979980014. Its totient is φ = 979980012.

The previous prime is 979979999. The next prime is 979980031. The reversal of 979980013 is 310089979.

Together with next prime (979980031) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 519748804 + 460231209 = 22798^2 + 21453^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-979980013 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (979980083) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 489990006 + 489990007.

It is an arithmetic number, because the mean of its divisors is an integer number (489990007).

Almost surely, 2^979980013 is an apocalyptic number.

It is an amenable number.

979980013 is a deficient number, since it is larger than the sum of its proper divisors (1).

979980013 is an equidigital number, since it uses as much as digits as its factorization.

979980013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 122472, while the sum is 46.

The square root of 979980013 is about 31304.6324527218. The cubic root of 979980013 is about 993.2816356616.

The spelling of 979980013 in words is "nine hundred seventy-nine million, nine hundred eighty thousand, thirteen".