89340021 has 6 divisors (see below), whose sum is σ = 129046710. Its totient is φ = 59560008.

The previous prime is 89340001. The next prime is 89340023. The reversal of 89340021 is 12004398.

It can be written as a sum of positive squares in only one way, i.e., 83064996 + 6275025 = 9114^2 + 2505^2 .

It is not a de Polignac number, because 89340021 - 2¹¹ = 89337973 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (89340023) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4963326 + ... + 4963343.

It is an arithmetic number, because the mean of its divisors is an integer number (21507785).

Almost surely, 2^89340021 is an apocalyptic number.

It is an amenable number.

89340021 is a deficient number, since it is larger than the sum of its proper divisors (39706689).

89340021 is a wasteful number, since it uses less digits than its factorization.

89340021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9926675 (or 9926672 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 89340021 is about 9451.9850296115. The cubic root of 89340021 is about 447.0423664482.

The spelling of 89340021 in words is "eighty-nine million, three hundred forty thousand, twenty-one".