749389 has 4 divisors (see below), whose sum is σ = 775260. Its totient is φ = 723520.

The previous prime is 749383. The next prime is 749393. The reversal of 749389 is 983947.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 983947 = 607 ⋅1621.

It can be written as a sum of positive squares in 2 ways, for example, as 293764 + 455625 = 542^2 + 675^2 .

It is a cyclic number.

It is not a de Polignac number, because 749389 - 2⁹ = 748877 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 (749383) 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, 12892 + ... + 12949.

It is an arithmetic number, because the mean of its divisors is an integer number (193815).

2⁷⁴⁹³⁸⁹ is an apocalyptic number.

It is an amenable number.

749389 is a deficient number, since it is larger than the sum of its proper divisors (25871).

749389 is a wasteful number, since it uses less digits than its factorization.

749389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25870.

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

The square root of 749389 is about 865.6725708950. The cubic root of 749389 is about 90.8313504790.

It can be divided in two parts, 74938 and 9, that added together give a palindrome (74947).

The spelling of 749389 in words is "seven hundred forty-nine thousand, three hundred eighty-nine".