89979619 has 2 divisors, whose sum is σ = 89979620. Its totient is φ = 89979618.

The previous prime is 89979601. The next prime is 89979629. The reversal of 89979619 is 91697998.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 89979619 - 2¹¹ = 89977571 is a prime.

It is a super-2 number, since 2×89979619² = 16192663670770322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (89979629) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44989809 + 44989810.

It is an arithmetic number, because the mean of its divisors is an integer number (44989810).

Almost surely, 2^89979619 is an apocalyptic number.

89979619 is a deficient number, since it is larger than the sum of its proper divisors (1).

89979619 is an equidigital number, since it uses as much as digits as its factorization.

89979619 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2204496, while the sum is 58.

The square root of 89979619 is about 9485.7587466686. The cubic root of 89979619 is about 448.1066441352.

The spelling of 89979619 in words is "eighty-nine million, nine hundred seventy-nine thousand, six hundred nineteen".