989722619 has 2 divisors, whose sum is σ = 989722620. Its totient is φ = 989722618.

The previous prime is 989722607. The next prime is 989722639. The reversal of 989722619 is 916227989.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 989722619 - 2²⁸ = 721287163 is a prime.

It is a super-2 number, since 2×989722619² = 1959101725120438322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (989722639) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 494861309 + 494861310.

It is an arithmetic number, because the mean of its divisors is an integer number (494861310).

Almost surely, 2^989722619 is an apocalyptic number.

989722619 is a deficient number, since it is larger than the sum of its proper divisors (1).

989722619 is an equidigital number, since it uses as much as digits as its factorization.

989722619 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 979776, while the sum is 53.

The square root of 989722619 is about 31459.8572628675. The cubic root of 989722619 is about 996.5624027996.

The spelling of 989722619 in words is "nine hundred eighty-nine million, seven hundred twenty-two thousand, six hundred nineteen".