9045390 has 64 divisors (see below), whose sum is σ = 23146560. Its totient is φ = 2257920.

The previous prime is 9045389. The next prime is 9045391. The reversal of 9045390 is 935409.

9045390 = 170² + 171² + ... + 317².

It is an interprime number because it is at equal distance from previous prime (9045389) and next prime (9045391).

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 (9045391) 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, 32050 + ... + 32330.

It is an arithmetic number, because the mean of its divisors is an integer number (361665).

Almost surely, 2^9045390 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9045390, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11573280).

9045390 is an abundant number, since it is smaller than the sum of its proper divisors (14101170).

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

9045390 is a wasteful number, since it uses less digits than its factorization.

9045390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 357.

The product of its (nonzero) digits is 4860, while the sum is 30.

The square root of 9045390 is about 3007.5554857725. Note that the first 3 decimals coincide. The cubic root of 9045390 is about 208.3574812898.

The spelling of 9045390 in words is "nine million, forty-five thousand, three hundred ninety".