90230983 has 4 divisors (see below), whose sum is σ = 90329040. Its totient is φ = 90132928.

The previous prime is 90230971. The next prime is 90230999. The reversal of 90230983 is 38903209.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-90230983 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 (90230923) 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, 47635 + ... + 49492.

It is an arithmetic number, because the mean of its divisors is an integer number (22582260).

Almost surely, 2^90230983 is an apocalyptic number.

90230983 is a deficient number, since it is larger than the sum of its proper divisors (98057).

90230983 is an equidigital number, since it uses as much as digits as its factorization.

90230983 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98056.

The product of its (nonzero) digits is 11664, while the sum is 34.

The square root of 90230983 is about 9498.9990525318. Note that the first 3 decimals coincide. The cubic root of 90230983 is about 448.5235279996.

The spelling of 90230983 in words is "ninety million, two hundred thirty thousand, nine hundred eighty-three".