979861951 has 2 divisors, whose sum is σ = 979861952. Its totient is φ = 979861950.

The previous prime is 979861937. The next prime is 979861957. The reversal of 979861951 is 159168979.

It is a strong prime.

It is an emirp because it is prime and its reverse (159168979) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 979861951 - 2²⁹ = 442991039 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 979861892 and 979861901.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (979861957) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 489930975 + 489930976.

It is an arithmetic number, because the mean of its divisors is an integer number (489930976).

Almost surely, 2^979861951 is an apocalyptic number.

979861951 is a deficient number, since it is larger than the sum of its proper divisors (1).

979861951 is an equidigital number, since it uses as much as digits as its factorization.

979861951 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1224720, while the sum is 55.

The square root of 979861951 is about 31302.7467005693. The cubic root of 979861951 is about 993.2417458936.

The spelling of 979861951 in words is "nine hundred seventy-nine million, eight hundred sixty-one thousand, nine hundred fifty-one".