89050981 has 4 divisors (see below), whose sum is σ = 94289292. Its totient is φ = 83812672.

The previous prime is 89050961. The next prime is 89050991. The reversal of 89050981 is 18905098.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 71064900 + 17986081 = 8430^2 + 4241^2 .

It is a cyclic number.

It is not a de Polignac number, because 89050981 - 2⁹ = 89050469 is a prime.

It is a super-2 number, since 2×89050981² = 15860154434124722, which contains 22 as substring.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (89050901) 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, 2619130 + ... + 2619163.

It is an arithmetic number, because the mean of its divisors is an integer number (23572323).

Almost surely, 2^89050981 is an apocalyptic number.

It is an amenable number.

89050981 is a deficient number, since it is larger than the sum of its proper divisors (5238311).

89050981 is a wasteful number, since it uses less digits than its factorization.

89050981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5238310.

The product of its (nonzero) digits is 25920, while the sum is 40.

The square root of 89050981 is about 9436.6827328251. The cubic root of 89050981 is about 446.5597431623.

The spelling of 89050981 in words is "eighty-nine million, fifty thousand, nine hundred eighty-one".