89406861 has 4 divisors (see below), whose sum is σ = 119209152. Its totient is φ = 59604572.

The previous prime is 89406841. The next prime is 89406871. The reversal of 89406861 is 16860498.

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 89406861 - 2⁵ = 89406829 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (89406841) 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, 14901141 + ... + 14901146.

It is an arithmetic number, because the mean of its divisors is an integer number (29802288).

Almost surely, 2^89406861 is an apocalyptic number.

It is an amenable number.

89406861 is a deficient number, since it is larger than the sum of its proper divisors (29802291).

89406861 is a wasteful number, since it uses less digits than its factorization.

89406861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29802290.

The product of its (nonzero) digits is 82944, while the sum is 42.

The square root of 89406861 is about 9455.5201337631. The cubic root of 89406861 is about 447.1538240117.

The spelling of 89406861 in words is "eighty-nine million, four hundred six thousand, eight hundred sixty-one".