89582989 has 2 divisors, whose sum is σ = 89582990. Its totient is φ = 89582988.

The previous prime is 89582981. The next prime is 89582993. The reversal of 89582989 is 98928598.

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., 71690089 + 17892900 = 8467^2 + 4230^2 .

It is a cyclic number.

It is not a de Polignac number, because 89582989 - 2³ = 89582981 is a prime.

It is a super-2 number, since 2×89582989² = 16050223836348242, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (89582981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44791494 + 44791495.

It is an arithmetic number, because the mean of its divisors is an integer number (44791495).

Almost surely, 2^89582989 is an apocalyptic number.

It is an amenable number.

89582989 is a deficient number, since it is larger than the sum of its proper divisors (1).

89582989 is an equidigital number, since it uses as much as digits as its factorization.

89582989 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3732480, while the sum is 58.

The square root of 89582989 is about 9464.8290528673. The cubic root of 89582989 is about 447.4472565617.

The spelling of 89582989 in words is "eighty-nine million, five hundred eighty-two thousand, nine hundred eighty-nine".