89379281 has 4 divisors (see below), whose sum is σ = 89470464. Its totient is φ = 89288100.

The previous prime is 89379263. The next prime is 89379337. The reversal of 89379281 is 18297398.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 89379281 - 2¹⁰ = 89378257 is a prime.

It is a super-2 number, since 2×89379281² = 15977311744153922, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (89379481) 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, 44105 + ... + 46086.

It is an arithmetic number, because the mean of its divisors is an integer number (22367616).

Almost surely, 2^89379281 is an apocalyptic number.

It is an amenable number.

89379281 is a deficient number, since it is larger than the sum of its proper divisors (91183).

89379281 is an equidigital number, since it uses as much as digits as its factorization.

89379281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91182.

The product of its digits is 217728, while the sum is 47.

The square root of 89379281 is about 9454.0616139308. The cubic root of 89379281 is about 447.1078403267.

The spelling of 89379281 in words is "eighty-nine million, three hundred seventy-nine thousand, two hundred eighty-one".