9090418 has 4 divisors (see below), whose sum is σ = 13635630. Its totient is φ = 4545208.

The previous prime is 9090407. The next prime is 9090437. The reversal of 9090418 is 8140909.

9090418 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 5276209 + 3814209 = 2297^2 + 1953^2 .

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 9090418.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2272603 + ... + 2272606.

Almost surely, 2^9090418 is an apocalyptic number.

9090418 is a deficient number, since it is larger than the sum of its proper divisors (4545212).

9090418 is a wasteful number, since it uses less digits than its factorization.

9090418 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4545211.

The product of its (nonzero) digits is 2592, while the sum is 31.

The square root of 9090418 is about 3015.0320064636. The cubic root of 9090418 is about 208.7026440680.

The spelling of 9090418 in words is "nine million, ninety thousand, four hundred eighteen".