9090215 has 8 divisors (see below), whose sum is σ = 10957680. Its totient is φ = 7239232.

The previous prime is 9090203. The next prime is 9090217. The reversal of 9090215 is 5120909.

It is a happy number.

9090215 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 9090215 - 2¹⁶ = 9024679 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9090217) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2870 + ... + 5139.

It is an arithmetic number, because the mean of its divisors is an integer number (1369710).

Almost surely, 2^9090215 is an apocalyptic number.

9090215 is a deficient number, since it is larger than the sum of its proper divisors (1867465).

9090215 is a wasteful number, since it uses less digits than its factorization.

9090215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8241.

The product of its (nonzero) digits is 810, while the sum is 26.

The square root of 9090215 is about 3014.9983416248. The cubic root of 9090215 is about 208.7010905292.

The spelling of 9090215 in words is "nine million, ninety thousand, two hundred fifteen".