3133749 has 4 divisors (see below), whose sum is σ = 4178336. Its totient is φ = 2089164.

The previous prime is 3133733. The next prime is 3133751. The reversal of 3133749 is 9473313.

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: 9473313 = 3 ⋅3157771.

It is not a de Polignac number, because 3133749 - 2⁴ = 3133733 is a prime.

It is a D-number.

It is a Duffinian number.

3133749 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3133799) 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 3 ways as a sum of consecutive naturals, for example, 522289 + ... + 522294.

It is an arithmetic number, because the mean of its divisors is an integer number (1044584).

Almost surely, 2^3133749 is an apocalyptic number.

It is an amenable number.

3133749 is a deficient number, since it is larger than the sum of its proper divisors (1044587).

3133749 is a wasteful number, since it uses less digits than its factorization.

3133749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1044586.

The product of its digits is 6804, while the sum is 30.

The square root of 3133749 is about 1770.2398142625. The cubic root of 3133749 is about 146.3371983466.

The spelling of 3133749 in words is "three million, one hundred thirty-three thousand, seven hundred forty-nine".