979819 has 2 divisors, whose sum is σ = 979820. Its totient is φ = 979818.

The previous prime is 979807. The next prime is 979831. The reversal of 979819 is 918979.

It is a balanced prime because it is at equal distance from previous prime (979807) and next prime (979831).

It is a cyclic number.

It is not a de Polignac number, because 979819 - 2⁵ = 979787 is a prime.

It is a super-2 number, since 2×979819² = 1920090545522, which contains 22 as substring.

It is a zygodrome in base 6.

It is not a weakly prime, because it can be changed into another prime (979889) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 489909 + 489910.

It is an arithmetic number, because the mean of its divisors is an integer number (489910).

2⁹⁷⁹⁸¹⁹ is an apocalyptic number.

979819 is a deficient number, since it is larger than the sum of its proper divisors (1).

979819 is an equidigital number, since it uses as much as digits as its factorization.

979819 is an evil number, because the sum of its binary digits is even.

The product of its digits is 40824, while the sum is 43.

The square root of 979819 is about 989.8580706344. The cubic root of 979819 is about 99.3227233186.

The spelling of 979819 in words is "nine hundred seventy-nine thousand, eight hundred nineteen".