90498239 has 4 divisors (see below), whose sum is σ = 97459656. Its totient is φ = 83536824.

The previous prime is 90498229. The next prime is 90498329. The reversal of 90498239 is 93289409.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 90498239 - 2¹⁶ = 90432703 is a prime.

It is a super-2 number, since 2×90498239² = 16379862524202242, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 90498239.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90498209) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3480689 + ... + 3480714.

It is an arithmetic number, because the mean of its divisors is an integer number (24364914).

Almost surely, 2^90498239 is an apocalyptic number.

90498239 is a deficient number, since it is larger than the sum of its proper divisors (6961417).

90498239 is a wasteful number, since it uses less digits than its factorization.

90498239 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6961416.

The product of its (nonzero) digits is 139968, while the sum is 44.

The square root of 90498239 is about 9513.0562386648. The cubic root of 90498239 is about 448.9659202014.

The spelling of 90498239 in words is "ninety million, four hundred ninety-eight thousand, two hundred thirty-nine".