89404921 has 8 divisors (see below), whose sum is σ = 94867200. Its totient is φ = 83965248.

The previous prime is 89404901. The next prime is 89404949. The reversal of 89404921 is 12940498.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 89404921 - 2⁷ = 89404793 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (89404901) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2880 + ... + 13678.

It is an arithmetic number, because the mean of its divisors is an integer number (11858400).

Almost surely, 2^89404921 is an apocalyptic number.

It is an amenable number.

89404921 is a deficient number, since it is larger than the sum of its proper divisors (5462279).

89404921 is a wasteful number, since it uses less digits than its factorization.

89404921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11303.

The product of its (nonzero) digits is 20736, while the sum is 37.

The square root of 89404921 is about 9455.4175476284. The cubic root of 89404921 is about 447.1505897905.

It can be divided in two parts, 8940 and 4921, that added together give a triangular number (13861 = T₁₆₆).

The spelling of 89404921 in words is "eighty-nine million, four hundred four thousand, nine hundred twenty-one".