9002091 has 8 divisors (see below), whose sum is σ = 13717504. Its totient is φ = 5144040.

The previous prime is 9002087. The next prime is 9002107. The reversal of 9002091 is 1902009.

It is a happy number.

9002091 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 not a de Polignac number, because 9002091 - 2² = 9002087 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21), and also a Moran number because the ratio is a prime number: 428671 = 9002091 / (9 + 0 + 0 + 2 + 0 + 9 + 1).

It is a Duffinian number.

9002091 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9002011) 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, 214315 + ... + 214356.

It is an arithmetic number, because the mean of its divisors is an integer number (1714688).

Almost surely, 2^9002091 is an apocalyptic number.

9002091 is a deficient number, since it is larger than the sum of its proper divisors (4715413).

9002091 is a wasteful number, since it uses less digits than its factorization.

9002091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 428681.

The product of its (nonzero) digits is 162, while the sum is 21.

The square root of 9002091 is about 3000.3484797603. The cubic root of 9002091 is about 208.0244901514.

The spelling of 9002091 in words is "nine million, two thousand, ninety-one".