749749 has 24 divisors (see below), whose sum is σ = 1034208. Its totient is φ = 534240.

The previous prime is 749747. The next prime is 749761. The reversal of 749749 is 947947.

It is not a de Polignac number, because 749749 - 2¹ = 749747 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (749741) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6954 + ... + 7060.

It is an arithmetic number, because the mean of its divisors is an integer number (43092).

2⁷⁴⁹⁷⁴⁹ is an apocalyptic number.

It is an amenable number.

749749 is a deficient number, since it is larger than the sum of its proper divisors (284459).

749749 is a wasteful number, since it uses less digits than its factorization.

749749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145 (or 138 counting only the distinct ones).

The product of its digits is 63504, while the sum is 40.

The square root of 749749 is about 865.8804767403. The cubic root of 749749 is about 90.8458930159.

The spelling of 749749 in words is "seven hundred forty-nine thousand, seven hundred forty-nine".