9102990 has 64 divisors (see below), whose sum is σ = 24929856. Its totient is φ = 2107392.

The previous prime is 9102953. The next prime is 9102991. The reversal of 9102990 is 992019.

9102990 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9102991) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5944 + ... + 7316.

It is an arithmetic number, because the mean of its divisors is an integer number (389529).

Almost surely, 2^9102990 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9102990, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12464928).

9102990 is an abundant number, since it is smaller than the sum of its proper divisors (15826866).

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

9102990 is a wasteful number, since it uses less digits than its factorization.

9102990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1413.

The product of its (nonzero) digits is 1458, while the sum is 30.

The square root of 9102990 is about 3017.1161727716. The cubic root of 9102990 is about 208.7988112996.

It can be divided in two parts, 91029 and 90, that added together give a palindrome (91119).

The spelling of 9102990 in words is "nine million, one hundred two thousand, nine hundred ninety".