5991749 has 4 divisors (see below), whose sum is σ = 6131136. Its totient is φ = 5852364.

The previous prime is 5991731. The next prime is 5991757. The reversal of 5991749 is 9471995.

5991749 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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 a de Polignac number, because none of the positive numbers 2^k-5991749 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5991709) 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, 69629 + ... + 69714.

It is an arithmetic number, because the mean of its divisors is an integer number (1532784).

Almost surely, 2^5991749 is an apocalyptic number.

It is an amenable number.

5991749 is a deficient number, since it is larger than the sum of its proper divisors (139387).

5991749 is a wasteful number, since it uses less digits than its factorization.

5991749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139386.

The product of its digits is 102060, while the sum is 44.

The square root of 5991749 is about 2447.8049350387. The cubic root of 5991749 is about 181.6287262837.

The spelling of 5991749 in words is "five million, nine hundred ninety-one thousand, seven hundred forty-nine".