979689619 has 2 divisors, whose sum is σ = 979689620. Its totient is φ = 979689618.

The previous prime is 979689553. The next prime is 979689643. The reversal of 979689619 is 916986979.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 979689619 - 2¹⁵ = 979656851 is a prime.

It is a super-2 number, since 2×979689619² = 1919583499152730322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (979689649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 489844809 + 489844810.

It is an arithmetic number, because the mean of its divisors is an integer number (489844810).

Almost surely, 2^979689619 is an apocalyptic number.

979689619 is a deficient number, since it is larger than the sum of its proper divisors (1).

979689619 is an equidigital number, since it uses as much as digits as its factorization.

979689619 is an evil number, because the sum of its binary digits is even.

The product of its digits is 13226976, while the sum is 64.

The square root of 979689619 is about 31299.9939137374. The cubic root of 979689619 is about 993.1835140947.

The spelling of 979689619 in words is "nine hundred seventy-nine million, six hundred eighty-nine thousand, six hundred nineteen".