90498839 has 4 divisors (see below), whose sum is σ = 90522456. Its totient is φ = 90475224.

The previous prime is 90498833. The next prime is 90498847. The reversal of 90498839 is 93889409.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 93889409 = 47 ⋅1997647.

It is a cyclic number.

It is not a de Polignac number, because 90498839 - 2¹⁶ = 90433303 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 (90498833) 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, 4589 + ... + 14214.

It is an arithmetic number, because the mean of its divisors is an integer number (22630614).

Almost surely, 2^90498839 is an apocalyptic number.

90498839 is a deficient number, since it is larger than the sum of its proper divisors (23617).

90498839 is a wasteful number, since it uses less digits than its factorization.

90498839 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23616.

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

The square root of 90498839 is about 9513.0877742193. The cubic root of 90498839 is about 448.9669124084.

The spelling of 90498839 in words is "ninety million, four hundred ninety-eight thousand, eight hundred thirty-nine".