90209448 has 48 divisors (see below), whose sum is σ = 279221280. Its totient is φ = 25773984.

The previous prime is 90209447. The next prime is 90209477. The reversal of 90209448 is 84490209.

It is a happy number.

90209448 is a `hidden beast` number, since 9 + 0 + 209 + 448 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (90209447) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 88990 + ... + 89997.

It is an arithmetic number, because the mean of its divisors is an integer number (5817110).

Almost surely, 2^90209448 is an apocalyptic number.

It is an amenable number.

90209448 is an abundant number, since it is smaller than the sum of its proper divisors (189011832).

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

90209448 is a wasteful number, since it uses less digits than its factorization.

90209448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 179006 (or 178999 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The square root of 90209448 is about 9497.8654444038. The cubic root of 90209448 is about 448.4878428340.

The spelling of 90209448 in words is "ninety million, two hundred nine thousand, four hundred forty-eight".