90835239 has 16 divisors (see below), whose sum is σ = 136387584. Its totient is φ = 53275200.

The previous prime is 90835237. The next prime is 90835253. The reversal of 90835239 is 93253809.

It is not a de Polignac number, because 90835239 - 2¹ = 90835237 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 90835197 and 90835206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90835237) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 43374 + ... + 45419.

It is an arithmetic number, because the mean of its divisors is an integer number (8524224).

Almost surely, 2^90835239 is an apocalyptic number.

90835239 is a deficient number, since it is larger than the sum of its proper divisors (45552345).

90835239 is a wasteful number, since it uses less digits than its factorization.

90835239 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88838.

The product of its (nonzero) digits is 58320, while the sum is 39.

The square root of 90835239 is about 9530.7522788078. The cubic root of 90835239 is about 449.5225207031.

The spelling of 90835239 in words is "ninety million, eight hundred thirty-five thousand, two hundred thirty-nine".