89409839 has 16 divisors (see below), whose sum is σ = 97804800. Its totient is φ = 81448704.

The previous prime is 89409833. The next prime is 89409869. The reversal of 89409839 is 93890498.

It is a cyclic number.

It is not a de Polignac number, because 89409839 - 2⁴ = 89409823 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (89409833) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 51839 + ... + 53535.

It is an arithmetic number, because the mean of its divisors is an integer number (6112800).

Almost surely, 2^89409839 is an apocalyptic number.

89409839 is a deficient number, since it is larger than the sum of its proper divisors (8394961).

89409839 is a wasteful number, since it uses less digits than its factorization.

89409839 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1822.

The product of its (nonzero) digits is 559872, while the sum is 50.

The square root of 89409839 is about 9455.6776066023. The cubic root of 89409839 is about 447.1587886169.

The spelling of 89409839 in words is "eighty-nine million, four hundred nine thousand, eight hundred thirty-nine".