89504381 has 4 divisors (see below), whose sum is σ = 89632764. Its totient is φ = 89376000.

The previous prime is 89504321. The next prime is 89504413. The reversal of 89504381 is 18340598.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 18340598 = 2 ⋅9170299.

It can be written as a sum of positive squares in 2 ways, for example, as 56625625 + 32878756 = 7525^2 + 5734^2 .

It is a cyclic number.

It is not a de Polignac number, because 89504381 - 2²⁶ = 22395517 is a prime.

It is a super-2 number, since 2×89504381² = 16022068436386322, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (89504321) 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 in 3 ways as a sum of consecutive naturals, for example, 63140 + ... + 64541.

It is an arithmetic number, because the mean of its divisors is an integer number (22408191).

Almost surely, 2^89504381 is an apocalyptic number.

It is an amenable number.

89504381 is a deficient number, since it is larger than the sum of its proper divisors (128383).

89504381 is a wasteful number, since it uses less digits than its factorization.

89504381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128382.

The product of its (nonzero) digits is 34560, while the sum is 38.

The square root of 89504381 is about 9460.6755044236. The cubic root of 89504381 is about 447.3163417258.

It can be divided in two parts, 8950 and 4381, that added together give a palindrome (13331).

The spelling of 89504381 in words is "eighty-nine million, five hundred four thousand, three hundred eighty-one".