89944489 has 4 divisors (see below), whose sum is σ = 89963460. Its totient is φ = 89925520.

The previous prime is 89944483. The next prime is 89944493. The reversal of 89944489 is 98444998.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 98444998 = 2 ⋅49222499.

It can be written as a sum of positive squares in 2 ways, for example, as 65610000 + 24334489 = 8100^2 + 4933^2 .

It is a cyclic number.

It is not a de Polignac number, because 89944489 - 2¹¹ = 89942441 is a prime.

It is a super-2 number, since 2×89944489² = 16180022202942242, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (89944483) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4527 + ... + 14155.

It is an arithmetic number, because the mean of its divisors is an integer number (22490865).

Almost surely, 2^89944489 is an apocalyptic number.

It is an amenable number.

89944489 is a deficient number, since it is larger than the sum of its proper divisors (18971).

89944489 is an equidigital number, since it uses as much as digits as its factorization.

89944489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18970.

The product of its digits is 2985984, while the sum is 55.

The square root of 89944489 is about 9483.9068426467. The cubic root of 89944489 is about 448.0483196846.

The spelling of 89944489 in words is "eighty-nine million, nine hundred forty-four thousand, four hundred eighty-nine".