1002749 has 4 divisors (see below), whose sum is σ = 1093920.
Its totient is φ = 911580.
The previous prime is 1002739. The next prime is 1002751. The reversal of 1002749 is 9472001.
It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.
It is a cyclic number.
It is not a de Polignac number, because 1002749 - 28 = 1002493 is a prime.
It is a Duffinian number.
It is a Curzon number.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (1002709) 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, 45569 + ... + 45590.
It is an arithmetic number, because the mean of its divisors is an integer number (273480).
21002749 is an apocalyptic number.
It is an amenable number.
1002749 is a deficient number, since it is larger than the sum of its proper divisors (91171).
1002749 is an equidigital number, since it uses as much as digits as its factorization.
1002749 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 91170.
The product of its (nonzero) digits is 504, while the sum is 23.
The square root of 1002749 is about 1001.3735566710.
The cubic root of 1002749 is about 100.0915494947.
The spelling of 1002749 in words is "one million, two thousand, seven hundred forty-nine".