89619769 has 2 divisors, whose sum is σ = 89619770. Its totient is φ = 89619768.

The previous prime is 89619757. The next prime is 89619779. The reversal of 89619769 is 96791698.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 81667369 + 7952400 = 9037^2 + 2820^2 .

It is a cyclic number.

It is not a de Polignac number, because 89619769 - 2⁵ = 89619737 is a prime.

It is a super-2 number, since 2×89619769² = 16063405991226722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (89619779) 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, 44809884 + 44809885.

It is an arithmetic number, because the mean of its divisors is an integer number (44809885).

Almost surely, 2^89619769 is an apocalyptic number.

It is an amenable number.

89619769 is a deficient number, since it is larger than the sum of its proper divisors (1).

89619769 is an equidigital number, since it uses as much as digits as its factorization.

89619769 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1469664, while the sum is 55.

The square root of 89619769 is about 9466.7718362703. The cubic root of 89619769 is about 447.5084841769.

The spelling of 89619769 in words is "eighty-nine million, six hundred nineteen thousand, seven hundred sixty-nine".