3322749 has 4 divisors (see below), whose sum is σ = 4430336. Its totient is φ = 2215164.

The previous prime is 3322747. The next prime is 3322757. The reversal of 3322749 is 9472233.

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, and also an emirpimes, since its reverse is a distinct semiprime: 9472233 = 3 ⋅3157411.

It is not a de Polignac number, because 3322749 - 2¹ = 3322747 is a prime.

It is a super-2 number, since 2×3322749² = 22081321834002, which contains 22 as substring.

It is a D-number.

It is a Duffinian number.

3322749 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3322747) 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, 553789 + ... + 553794.

It is an arithmetic number, because the mean of its divisors is an integer number (1107584).

Almost surely, 2^3322749 is an apocalyptic number.

It is an amenable number.

3322749 is a deficient number, since it is larger than the sum of its proper divisors (1107587).

3322749 is a wasteful number, since it uses less digits than its factorization.

3322749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1107586.

The product of its digits is 9072, while the sum is 30.

The square root of 3322749 is about 1822.8409146165. The cubic root of 3322749 is about 149.2218816362.

It can be divided in two parts, 332 and 2749, that added together give a triangular number (3081 = T₇₈).

The spelling of 3322749 in words is "three million, three hundred twenty-two thousand, seven hundred forty-nine".