90323998 has 4 divisors (see below), whose sum is σ = 135486000. Its totient is φ = 45161998.

The previous prime is 90323977. The next prime is 90324001. The reversal of 90323998 is 89932309.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 89932309 = 2579 ⋅34871.

It is a super-2 number, since 2×90323998² = 16316849229408008, which contains 22 as substring.

It is a congruent number.

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, 22580998 + ... + 22581001.

It is an arithmetic number, because the mean of its divisors is an integer number (33871500).

Almost surely, 2^90323998 is an apocalyptic number.

90323998 is a deficient number, since it is larger than the sum of its proper divisors (45162002).

90323998 is a wasteful number, since it uses less digits than its factorization.

90323998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45162001.

The product of its (nonzero) digits is 104976, while the sum is 43.

The square root of 90323998 is about 9503.8938335821. The cubic root of 90323998 is about 448.6775958790.

The spelling of 90323998 in words is "ninety million, three hundred twenty-three thousand, nine hundred ninety-eight".