90209316 has 12 divisors (see below), whose sum is σ = 210488432. Its totient is φ = 30069768.

The previous prime is 90209311. The next prime is 90209323. The reversal of 90209316 is 61390209.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (90209311) 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 3 ways as a sum of consecutive naturals, for example, 3758710 + ... + 3758733.

Almost surely, 2^90209316 is an apocalyptic number.

It is an amenable number.

90209316 is an abundant number, since it is smaller than the sum of its proper divisors (120279116).

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

90209316 is a wasteful number, since it uses less digits than its factorization.

90209316 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7517450 (or 7517448 counting only the distinct ones).

The product of its (nonzero) digits is 2916, while the sum is 30.

The square root of 90209316 is about 9497.8584954715. The cubic root of 90209316 is about 448.4876240823.

It can be divided in two parts, 90209 and 316, that added together give a triangular number (90525 = T₄₂₅).

The spelling of 90209316 in words is "ninety million, two hundred nine thousand, three hundred sixteen".