90283393 has 4 divisors (see below), whose sum is σ = 91813680. Its totient is φ = 88753108.

The previous prime is 90283339. The next prime is 90283397. The reversal of 90283393 is 39338209.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 39338209 = 109 ⋅360901.

It is a cyclic number.

It is not a de Polignac number, because 90283393 - 2¹³ = 90275201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (90283397) 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, 765055 + ... + 765172.

It is an arithmetic number, because the mean of its divisors is an integer number (22953420).

Almost surely, 2^90283393 is an apocalyptic number.

It is an amenable number.

90283393 is a deficient number, since it is larger than the sum of its proper divisors (1530287).

90283393 is a wasteful number, since it uses less digits than its factorization.

90283393 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1530286.

The product of its (nonzero) digits is 34992, while the sum is 37.

The square root of 90283393 is about 9501.7573637722. The cubic root of 90283393 is about 448.6103517175.

It can be divided in two parts, 9028 and 3393, that added together give a palindrome (12421).

The spelling of 90283393 in words is "ninety million, two hundred eighty-three thousand, three hundred ninety-three".