89369381 has 4 divisors (see below), whose sum is σ = 91549164. Its totient is φ = 87189600.

The previous prime is 89369377. The next prime is 89369389. The reversal of 89369381 is 18396398.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 18396398 = 2 ⋅9198199.

It can be written as a sum of positive squares in 2 ways, for example, as 7756225 + 81613156 = 2785^2 + 9034^2 .

It is a cyclic number.

It is not a de Polignac number, because 89369381 - 2² = 89369377 is a prime.

It is a super-2 number, since 2×89369381² = 15973772520646322, 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 (89369389) 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, 1089830 + ... + 1089911.

It is an arithmetic number, because the mean of its divisors is an integer number (22887291).

Almost surely, 2^89369381 is an apocalyptic number.

It is an amenable number.

89369381 is a deficient number, since it is larger than the sum of its proper divisors (2179783).

89369381 is a wasteful number, since it uses less digits than its factorization.

89369381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2179782.

The product of its digits is 279936, while the sum is 47.

The square root of 89369381 is about 9453.5380149445. The cubic root of 89369381 is about 447.0913319107.

The spelling of 89369381 in words is "eighty-nine million, three hundred sixty-nine thousand, three hundred eighty-one".