90446985 has 48 divisors (see below), whose sum is σ = 161029440. Its totient is φ = 46949760.

The previous prime is 90446977. The next prime is 90447013. The reversal of 90446985 is 58964409.

It is a happy number.

It is not a de Polignac number, because 90446985 - 2³ = 90446977 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 90446985.

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 47 ways as a sum of consecutive naturals, for example, 394851 + ... + 395079.

It is an arithmetic number, because the mean of its divisors is an integer number (3354780).

Almost surely, 2^90446985 is an apocalyptic number.

It is an amenable number.

90446985 is a deficient number, since it is larger than the sum of its proper divisors (70582455).

90446985 is a wasteful number, since it uses less digits than its factorization.

90446985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 438 (or 435 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 45.

The square root of 90446985 is about 9510.3619804926. The cubic root of 90446985 is about 448.8811463794.

The spelling of 90446985 in words is "ninety million, four hundred forty-six thousand, nine hundred eighty-five".