89967381 has 12 divisors (see below), whose sum is σ = 139541472. Its totient is φ = 51409848.

The previous prime is 89967379. The next prime is 89967391. The reversal of 89967381 is 18376998.

It is not a de Polignac number, because 89967381 - 2¹ = 89967379 is a prime.

It is a super-2 number, since 2×89967381² = 16188259287998322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (89967391) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 305865 + ... + 306158.

It is an arithmetic number, because the mean of its divisors is an integer number (11628456).

Almost surely, 2^89967381 is an apocalyptic number.

It is an amenable number.

89967381 is a deficient number, since it is larger than the sum of its proper divisors (49574091).

89967381 is a wasteful number, since it uses less digits than its factorization.

89967381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 612040 (or 612033 counting only the distinct ones).

The product of its digits is 653184, while the sum is 51.

The square root of 89967381 is about 9485.1136524556. The cubic root of 89967381 is about 448.0863277650.

The spelling of 89967381 in words is "eighty-nine million, nine hundred sixty-seven thousand, three hundred eighty-one".