749739 has 8 divisors (see below), whose sum is σ = 1012032. Its totient is φ = 493640.

The previous prime is 749729. The next prime is 749741. The reversal of 749739 is 937947.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 749739 - 2¹³ = 741547 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 749697 and 749706.

It is not an unprimeable number, because it can be changed into a prime (749729) 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 7 ways as a sum of consecutive naturals, for example, 1257 + ... + 1754.

It is an arithmetic number, because the mean of its divisors is an integer number (126504).

2⁷⁴⁹⁷³⁹ is an apocalyptic number.

749739 is a deficient number, since it is larger than the sum of its proper divisors (262293).

749739 is a wasteful number, since it uses less digits than its factorization.

749739 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3097.

The product of its digits is 47628, while the sum is 39.

The square root of 749739 is about 865.8747022520. The cubic root of 749739 is about 90.8454891194.

Subtracting from 749739 its sum of digits (39), we obtain a triangular number (749700 = T₁₂₂₄).

The spelling of 749739 in words is "seven hundred forty-nine thousand, seven hundred thirty-nine".