89211381 has 16 divisors (see below), whose sum is σ = 137290368. Its totient is φ = 50472000.

The previous prime is 89211379. The next prime is 89211383. The reversal of 89211381 is 18311298.

It is an interprime number because it is at equal distance from previous prime (89211379) and next prime (89211383).

It is not a de Polignac number, because 89211381 - 2¹ = 89211379 is a prime.

It is a super-2 number, since 2×89211381² = 15917340999854322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (89211383) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18910 + ... + 23151.

It is an arithmetic number, because the mean of its divisors is an integer number (8580648).

Almost surely, 2^89211381 is an apocalyptic number.

It is an amenable number.

89211381 is a deficient number, since it is larger than the sum of its proper divisors (48078987).

89211381 is a wasteful number, since it uses less digits than its factorization.

89211381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42172.

The product of its digits is 3456, while the sum is 33.

The square root of 89211381 is about 9445.1776584668. The cubic root of 89211381 is about 446.8276991094.

The spelling of 89211381 in words is "eighty-nine million, two hundred eleven thousand, three hundred eighty-one".