902091 has 8 divisors (see below), whose sum is σ = 1207440. Its totient is φ = 599072.

The previous prime is 902089. The next prime is 902119. The reversal of 902091 is 190209.

It is a happy number.

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 902091 - 2¹ = 902089 is a prime.

It is not an unprimeable number, because it can be changed into a prime (902191) 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, 781 + ... + 1553.

It is an arithmetic number, because the mean of its divisors is an integer number (150930).

2⁹⁰²⁰⁹¹ is an apocalyptic number.

902091 is a deficient number, since it is larger than the sum of its proper divisors (305349).

902091 is a wasteful number, since it uses less digits than its factorization.

902091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1165.

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

The square root of 902091 is about 949.7847124480. The cubic root of 902091 is about 96.6236524176.

The spelling of 902091 in words is "nine hundred two thousand, ninety-one".