90183994 has 8 divisors (see below), whose sum is σ = 142395840. Its totient is φ = 42718716.

The previous prime is 90183971. The next prime is 90184001. The reversal of 90183994 is 49938109.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 90183994.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1186594 + ... + 1186669.

It is an arithmetic number, because the mean of its divisors is an integer number (17799480).

Almost surely, 2^90183994 is an apocalyptic number.

90183994 is a deficient number, since it is larger than the sum of its proper divisors (52211846).

90183994 is a wasteful number, since it uses less digits than its factorization.

90183994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2373284.

The product of its (nonzero) digits is 69984, while the sum is 43.

The square root of 90183994 is about 9496.5253645741. The cubic root of 90183994 is about 448.4456562572.

The spelling of 90183994 in words is "ninety million, one hundred eighty-three thousand, nine hundred ninety-four".