89774609 has 2 divisors, whose sum is σ = 89774610. Its totient is φ = 89774608.

The previous prime is 89774579. The next prime is 89774611. The reversal of 89774609 is 90647798.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 83539600 + 6235009 = 9140^2 + 2497^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-89774609 is a prime.

It is a super-2 number, since 2×89774609² = 16118960842205762, which contains 22 as substring.

Together with 89774611, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (89774809) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44887304 + 44887305.

It is an arithmetic number, because the mean of its divisors is an integer number (44887305).

Almost surely, 2^89774609 is an apocalyptic number.

It is an amenable number.

89774609 is a deficient number, since it is larger than the sum of its proper divisors (1).

89774609 is an equidigital number, since it uses as much as digits as its factorization.

89774609 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 762048, while the sum is 50.

The square root of 89774609 is about 9474.9463850726. The cubic root of 89774609 is about 447.7660625599.

The spelling of 89774609 in words is "eighty-nine million, seven hundred seventy-four thousand, six hundred nine".