979408819 has 2 divisors, whose sum is σ = 979408820. Its totient is φ = 979408818.

The previous prime is 979408799. The next prime is 979408831. The reversal of 979408819 is 918804979.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 979408819 - 2⁷ = 979408691 is a prime.

It is a super-2 number, since 2×979408819² = 1918483269469949522, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 979408819.

It is not a weakly prime, because it can be changed into another prime (979408519) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 489704409 + 489704410.

It is an arithmetic number, because the mean of its divisors is an integer number (489704410).

Almost surely, 2^979408819 is an apocalyptic number.

979408819 is a deficient number, since it is larger than the sum of its proper divisors (1).

979408819 is an equidigital number, since it uses as much as digits as its factorization.

979408819 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1306368, while the sum is 55.

The square root of 979408819 is about 31295.5079683970. The cubic root of 979408819 is about 993.0886158145.

The spelling of 979408819 in words is "nine hundred seventy-nine million, four hundred eight thousand, eight hundred nineteen".