902749 has 4 divisors (see below), whose sum is σ = 919836. Its totient is φ = 885664.

The previous prime is 902723. The next prime is 902753. The reversal of 902749 is 947209.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 947209 = 23 ⋅41183.

It can be written as a sum of positive squares in 2 ways, for example, as 422500 + 480249 = 650^2 + 693^2 .

It is a cyclic number.

It is not a de Polignac number, because 902749 - 2¹¹ = 900701 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 902749.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (902719) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8464 + ... + 8569.

It is an arithmetic number, because the mean of its divisors is an integer number (229959).

2⁹⁰²⁷⁴⁹ is an apocalyptic number.

It is an amenable number.

902749 is a deficient number, since it is larger than the sum of its proper divisors (17087).

902749 is a wasteful number, since it uses less digits than its factorization.

902749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17086.

The product of its (nonzero) digits is 4536, while the sum is 31.

The square root of 902749 is about 950.1310435935. The cubic root of 902749 is about 96.6471396678.

The spelling of 902749 in words is "nine hundred two thousand, seven hundred forty-nine".