89094721 has 3 divisors (see below), whose sum is σ = 89104161. Its totient is φ = 89085282.

The previous prime is 89094701. The next prime is 89094767. The reversal of 89094721 is 12749098.

The square root of 89094721 is 9439.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 89094721 - 2⁵ = 89094689 is a prime.

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

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (89094701) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 4720 + ... + 14158.

It is an arithmetic number, because the mean of its divisors is an integer number (29701387).

Almost surely, 2^89094721 is an apocalyptic number.

89094721 is the 9439-th square number.

89094721 is the 4720-th centered octagonal number.

It is an amenable number.

89094721 is a deficient number, since it is larger than the sum of its proper divisors (9440).

89094721 is an frugal number, since it uses more digits than its factorization.

89094721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18878 (or 9439 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 40.

The cubic root of 89094721 is about 446.6328448314.

The spelling of 89094721 in words is "eighty-nine million, ninety-four thousand, seven hundred twenty-one".