90983071 has 4 divisors (see below), whose sum is σ = 91445112. Its totient is φ = 90521032.

The previous prime is 90983051. The next prime is 90983107. The reversal of 90983071 is 17038909.

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 90983071 - 2²⁵ = 57428639 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 90983071.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90983051) 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, 230725 + ... + 231118.

It is an arithmetic number, because the mean of its divisors is an integer number (22861278).

Almost surely, 2^90983071 is an apocalyptic number.

90983071 is a deficient number, since it is larger than the sum of its proper divisors (462041).

90983071 is a wasteful number, since it uses less digits than its factorization.

90983071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 462040.

The product of its (nonzero) digits is 13608, while the sum is 37.

The square root of 90983071 is about 9538.5046521978. The cubic root of 90983071 is about 449.7662506180.

The spelling of 90983071 in words is "ninety million, nine hundred eighty-three thousand, seventy-one".