89540989 has 16 divisors (see below), whose sum is σ = 98689536. Its totient is φ = 80870400.

The previous prime is 89540963. The next prime is 89541013. The reversal of 89540989 is 98904598.

It is a cyclic number.

It is not a de Polignac number, because 89540989 - 2¹¹ = 89538941 is a prime.

It is a super-2 number, since 2×89540989² = 16035177422196242, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (89540189) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 68389 + ... + 69685.

It is an arithmetic number, because the mean of its divisors is an integer number (6168096).

Almost surely, 2^89540989 is an apocalyptic number.

It is an amenable number.

89540989 is a deficient number, since it is larger than the sum of its proper divisors (9148547).

89540989 is a wasteful number, since it uses less digits than its factorization.

89540989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1476.

The product of its (nonzero) digits is 933120, while the sum is 52.

The square root of 89540989 is about 9462.6100522002. The cubic root of 89540989 is about 447.3773187209.

The spelling of 89540989 in words is "eighty-nine million, five hundred forty thousand, nine hundred eighty-nine".