90443916 has 18 divisors (see below), whose sum is σ = 228622212. Its totient is φ = 30147960.

The previous prime is 90443897. The next prime is 90443963. The reversal of 90443916 is 61934409.

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 2512331 = 90443916 / (9 + 0 + 4 + 4 + 3 + 9 + 1 + 6).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1256130 + ... + 1256201.

It is an arithmetic number, because the mean of its divisors is an integer number (12701234).

Almost surely, 2^90443916 is an apocalyptic number.

It is an amenable number.

90443916 is an abundant number, since it is smaller than the sum of its proper divisors (138178296).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

90443916 is a wasteful number, since it uses less digits than its factorization.

90443916 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2512341 (or 2512336 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 36.

The square root of 90443916 is about 9510.2006287985. The cubic root of 90443916 is about 448.8760692549.

The spelling of 90443916 in words is "ninety million, four hundred forty-three thousand, nine hundred sixteen".