90574209 has 12 divisors (see below), whose sum is σ = 142723152. Its totient is φ = 54893400.

The previous prime is 90574199. The next prime is 90574213. The reversal of 90574209 is 90247509.

It is not a de Polignac number, because 90574209 - 2⁴ = 90574193 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (90574229) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 457347 + ... + 457544.

It is an arithmetic number, because the mean of its divisors is an integer number (11893596).

Almost surely, 2^90574209 is an apocalyptic number.

90574209 is a gapful number since it is divisible by the number (99) formed by its first and last digit.

It is an amenable number.

90574209 is a deficient number, since it is larger than the sum of its proper divisors (52148943).

90574209 is a wasteful number, since it uses less digits than its factorization.

90574209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 914908 (or 914905 counting only the distinct ones).

The product of its (nonzero) digits is 22680, while the sum is 36.

The square root of 90574209 is about 9517.0483344365. The cubic root of 90574209 is about 449.0915152836.

The spelling of 90574209 in words is "ninety million, five hundred seventy-four thousand, two hundred nine".