90289802 has 4 divisors (see below), whose sum is σ = 135434706. Its totient is φ = 45144900.

The previous prime is 90289799. The next prime is 90289817. The reversal of 90289802 is 20898209.

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

It can be written as a sum of positive squares in only one way, i.e., 78872161 + 11417641 = 8881^2 + 3379^2 .

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 22572449 + ... + 22572452.

Almost surely, 2^90289802 is an apocalyptic number.

90289802 is a deficient number, since it is larger than the sum of its proper divisors (45144904).

90289802 is a wasteful number, since it uses less digits than its factorization.

90289802 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45144903.

The product of its (nonzero) digits is 20736, while the sum is 38.

The square root of 90289802 is about 9502.0946111897. The cubic root of 90289802 is about 448.6209667215.

The spelling of 90289802 in words is "ninety million, two hundred eighty-nine thousand, eight hundred two".