3321749 has 8 divisors (see below), whose sum is σ = 3612888. Its totient is φ = 3041280.

The previous prime is 3321739. The next prime is 3321757. The reversal of 3321749 is 9471233.

It can be written as a sum of positive squares in 4 ways, for example, as 940900 + 2380849 = 970^2 + 1543^2 .

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 3321749 - 2⁴ = 3321733 is a prime.

It is a super-2 number, since 2×3321749² = 22068032838002, which contains 22 as substring.

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 (3321709) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2012 + ... + 3269.

It is an arithmetic number, because the mean of its divisors is an integer number (451611).

Almost surely, 2^3321749 is an apocalyptic number.

It is an amenable number.

3321749 is a deficient number, since it is larger than the sum of its proper divisors (291139).

3321749 is a wasteful number, since it uses less digits than its factorization.

3321749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5335.

The product of its digits is 4536, while the sum is 29.

The square root of 3321749 is about 1822.5665968628. The cubic root of 3321749 is about 149.2069104127.

It can be divided in two parts, 33 and 21749, that multiplied together give a palindrome (717717).

The spelling of 3321749 in words is "three million, three hundred twenty-one thousand, seven hundred forty-nine".