979813631 has 2 divisors, whose sum is σ = 979813632. Its totient is φ = 979813630.

The previous prime is 979813619. The next prime is 979813669. The reversal of 979813631 is 136318979.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (136318979) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 979813631 - 2¹⁰ = 979812607 is a prime.

It is a super-2 number, since 2×979813631² = 1920069502986808322, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (979816631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 489906815 + 489906816.

It is an arithmetic number, because the mean of its divisors is an integer number (489906816).

Almost surely, 2^979813631 is an apocalyptic number.

979813631 is a deficient number, since it is larger than the sum of its proper divisors (1).

979813631 is an equidigital number, since it uses as much as digits as its factorization.

979813631 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 244944, while the sum is 47.

The square root of 979813631 is about 31301.9748737999. The cubic root of 979813631 is about 993.2254190256.

The spelling of 979813631 in words is "nine hundred seventy-nine million, eight hundred thirteen thousand, six hundred thirty-one".