748109 has 4 divisors (see below), whose sum is σ = 750204. Its totient is φ = 746016.

The previous prime is 748093. The next prime is 748133. The reversal of 748109 is 901847.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 901847 = 541 ⋅1667.

It can be written as a sum of positive squares in 2 ways, for example, as 299209 + 448900 = 547^2 + 670^2 .

It is a cyclic number.

It is not a de Polignac number, because 748109 - 2⁴ = 748093 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 (748169) 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 3 ways as a sum of consecutive naturals, for example, 362 + ... + 1275.

It is an arithmetic number, because the mean of its divisors is an integer number (187551).

2⁷⁴⁸¹⁰⁹ is an apocalyptic number.

It is an amenable number.

748109 is a deficient number, since it is larger than the sum of its proper divisors (2095).

748109 is a wasteful number, since it uses less digits than its factorization.

748109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2094.

The product of its (nonzero) digits is 2016, while the sum is 29.

The square root of 748109 is about 864.9329453778. The cubic root of 748109 is about 90.7796059303.

The spelling of 748109 in words is "seven hundred forty-eight thousand, one hundred nine".