8490990233 has 6 divisors (see below), whose sum is σ = 9333072042. Its totient is φ = 7719081920.

The previous prime is 8490990223. The next prime is 8490990259. The reversal of 8490990233 is 3320990948.

It can be written as a sum of positive squares in only one way, i.e., 7179681289 + 1311308944 = 84733^2 + 36212^2 .

It is not a de Polignac number, because 8490990233 - 2¹⁰ = 8490989209 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 (8490990223) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 35086616 + ... + 35086857.

It is an arithmetic number, because the mean of its divisors is an integer number (1555512007).

Almost surely, 2^8490990233 is an apocalyptic number.

It is an amenable number.

8490990233 is a deficient number, since it is larger than the sum of its proper divisors (842081809).

8490990233 is a wasteful number, since it uses less digits than its factorization.

8490990233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70173495 (or 70173484 counting only the distinct ones).

The product of its (nonzero) digits is 419904, while the sum is 47.

The square root of 8490990233 is about 92146.5692958777. The cubic root of 8490990233 is about 2040.1062222820.

The spelling of 8490990233 in words is "eight billion, four hundred ninety million, nine hundred ninety thousand, two hundred thirty-three".