979992999949 has 2 divisors, whose sum is σ = 979992999950. Its totient is φ = 979992999948.

The previous prime is 979992999941. The next prime is 979992999959. The reversal of 979992999949 is 949999299979.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 535780080900 + 444212919049 = 731970^2 + 666493^2 .

It is a cyclic number.

It is not a de Polignac number, because 979992999949 - 2³ = 979992999941 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (979992999941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 489996499974 + 489996499975.

It is an arithmetic number, because the mean of its divisors is an integer number (489996499975).

Almost surely, 2^979992999949 is an apocalyptic number.

It is an amenable number.

979992999949 is a deficient number, since it is larger than the sum of its proper divisors (1).

979992999949 is an equidigital number, since it uses as much as digits as its factorization.

979992999949 is an evil number, because the sum of its binary digits is even.

The product of its digits is 21695547384, while the sum is 94.

The spelling of 979992999949 in words is "nine hundred seventy-nine billion, nine hundred ninety-two million, nine hundred ninety-nine thousand, nine hundred forty-nine".