90239189 has 16 divisors (see below), whose sum is σ = 101815680. Its totient is φ = 79548480.

The previous prime is 90239183. The next prime is 90239207. The reversal of 90239189 is 98193209.

It is a cyclic number.

It is not a de Polignac number, because 90239189 - 2⁸ = 90238933 is a prime.

It is a super-2 number, since 2×90239189² = 16286222462755442, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90239183) 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, 13379 + ... + 18959.

It is an arithmetic number, because the mean of its divisors is an integer number (6363480).

Almost surely, 2^90239189 is an apocalyptic number.

It is an amenable number.

90239189 is a deficient number, since it is larger than the sum of its proper divisors (11576491).

90239189 is a wasteful number, since it uses less digits than its factorization.

90239189 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5660.

The product of its (nonzero) digits is 34992, while the sum is 41.

The square root of 90239189 is about 9499.4309829589. The cubic root of 90239189 is about 448.5371244841.

The spelling of 90239189 in words is "ninety million, two hundred thirty-nine thousand, one hundred eighty-nine".