90493289 has 4 divisors (see below), whose sum is σ = 90513024. Its totient is φ = 90473556.

The previous prime is 90493267. The next prime is 90493307. The reversal of 90493289 is 98239409.

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.

It is a cyclic number.

It is not a de Polignac number, because 90493289 - 2⁸ = 90493033 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (90493229) 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 3 ways as a sum of consecutive naturals, for example, 1004 + ... + 13490.

It is an arithmetic number, because the mean of its divisors is an integer number (22628256).

Almost surely, 2^90493289 is an apocalyptic number.

It is an amenable number.

90493289 is a deficient number, since it is larger than the sum of its proper divisors (19735).

90493289 is a wasteful number, since it uses less digits than its factorization.

90493289 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19734.

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

The square root of 90493289 is about 9512.7960663519. The cubic root of 90493289 is about 448.9577343264.

The spelling of 90493289 in words is "ninety million, four hundred ninety-three thousand, two hundred eighty-nine".