89993131 has 4 divisors (see below), whose sum is σ = 90589264. Its totient is φ = 89397000.

The previous prime is 89993129. The next prime is 89993147. The reversal of 89993131 is 13139998.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13139998 = 2 ⋅6569999.

It is a cyclic number.

It is not a de Polignac number, because 89993131 - 2¹ = 89993129 is a prime.

It is a super-2 number, since 2×89993131² = 16197527254366322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (89993191) 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, 297840 + ... + 298141.

It is an arithmetic number, because the mean of its divisors is an integer number (22647316).

Almost surely, 2^89993131 is an apocalyptic number.

89993131 is a deficient number, since it is larger than the sum of its proper divisors (596133).

89993131 is a wasteful number, since it uses less digits than its factorization.

89993131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 596132.

The product of its digits is 52488, while the sum is 43.

The square root of 89993131 is about 9486.4709455097. The cubic root of 89993131 is about 448.1290733400.

The spelling of 89993131 in words is "eighty-nine million, nine hundred ninety-three thousand, one hundred thirty-one".