749938 has 32 divisors (see below), whose sum is σ = 1430784. Its totient is φ = 287232.

The previous prime is 749927. The next prime is 749939. The reversal of 749938 is 839947.

It is a self number, because there is not a number n which added to its sum of digits gives 749938.

It is not an unprimeable number, because it can be changed into a prime (749939) by changing a digit.

749938 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

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 15 ways as a sum of consecutive naturals, for example, 5406 + ... + 5542.

It is an arithmetic number, because the mean of its divisors is an integer number (44712).

2⁷⁴⁹⁹³⁸ is an apocalyptic number.

749938 is the 548-th heptagonal number.

749938 is a deficient number, since it is larger than the sum of its proper divisors (680846).

749938 is a wasteful number, since it uses less digits than its factorization.

749938 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 186.

The product of its digits is 54432, while the sum is 40.

The square root of 749938 is about 865.9896073279. The cubic root of 749938 is about 90.8535259842.

Subtracting 749938 from its reverse (839947), we obtain a palindrome (90009).

The spelling of 749938 in words is "seven hundred forty-nine thousand, nine hundred thirty-eight".