90199916 has 12 divisors (see below), whose sum is σ = 166157880. Its totient is φ = 42726240.

The previous prime is 90199913. The next prime is 90199927. The reversal of 90199916 is 61999109.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (90199913) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 593345 + ... + 593496.

It is an arithmetic number, because the mean of its divisors is an integer number (13846490).

Almost surely, 2^90199916 is an apocalyptic number.

It is an amenable number.

90199916 is a deficient number, since it is larger than the sum of its proper divisors (75957964).

90199916 is a wasteful number, since it uses less digits than its factorization.

90199916 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1186864 (or 1186862 counting only the distinct ones).

The product of its (nonzero) digits is 39366, while the sum is 44.

The square root of 90199916 is about 9497.3636341882. The cubic root of 90199916 is about 448.4720457574.

The spelling of 90199916 in words is "ninety million, one hundred ninety-nine thousand, nine hundred sixteen".