4033749 has 4 divisors (see below), whose sum is σ = 5378336. Its totient is φ = 2689164.

The previous prime is 4033741. The next prime is 4033753. The reversal of 4033749 is 9473304.

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 not a de Polignac number, because 4033749 - 2³ = 4033741 is a prime.

It is a super-2 number, since 2×4033749² = 32542261990002, which contains 22 as substring.

It is an Ulam number.

It is a D-number.

It is a Duffinian number.

4033749 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4033741) 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, 672289 + ... + 672294.

It is an arithmetic number, because the mean of its divisors is an integer number (1344584).

Almost surely, 2^4033749 is an apocalyptic number.

It is an amenable number.

4033749 is a deficient number, since it is larger than the sum of its proper divisors (1344587).

4033749 is a wasteful number, since it uses less digits than its factorization.

4033749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1344586.

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

The square root of 4033749 is about 2008.4195278875. The cubic root of 4033749 is about 159.1852987822.

The spelling of 4033749 in words is "four million, thirty-three thousand, seven hundred forty-nine".