90438683 has 4 divisors (see below), whose sum is σ = 90980400. Its totient is φ = 89896968.

The previous prime is 90438643. The next prime is 90438707. The reversal of 90438683 is 38683409.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 38683409 = 59 ⋅655651.

It is a cyclic number.

It is not a de Polignac number, because 90438683 - 2²⁰ = 89390107 is a prime.

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 90438683.

It is not an unprimeable number, because it can be changed into a prime (90438643) 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, 270608 + ... + 270941.

It is an arithmetic number, because the mean of its divisors is an integer number (22745100).

Almost surely, 2^90438683 is an apocalyptic number.

90438683 is a deficient number, since it is larger than the sum of its proper divisors (541717).

90438683 is a wasteful number, since it uses less digits than its factorization.

90438683 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 541716.

The product of its (nonzero) digits is 124416, while the sum is 41.

The square root of 90438683 is about 9509.9254991824. The cubic root of 90438683 is about 448.8674119054.

The spelling of 90438683 in words is "ninety million, four hundred thirty-eight thousand, six hundred eighty-three".