748009 has 4 divisors (see below), whose sum is σ = 752004. Its totient is φ = 744016.

The previous prime is 748003. The next prime is 748019. The reversal of 748009 is 900847.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 363609 + 384400 = 603^2 + 620^2 .

It is a cyclic number.

It is not a de Polignac number, because 748009 - 2⁵ = 747977 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (748003) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1702 + ... + 2095.

It is an arithmetic number, because the mean of its divisors is an integer number (188001).

2⁷⁴⁸⁰⁰⁹ is an apocalyptic number.

It is an amenable number.

748009 is a deficient number, since it is larger than the sum of its proper divisors (3995).

748009 is a wasteful number, since it uses less digits than its factorization.

748009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3994.

The product of its (nonzero) digits is 2016, while the sum is 28.

The square root of 748009 is about 864.8751354964. The cubic root of 748009 is about 90.7755609025.

The spelling of 748009 in words is "seven hundred forty-eight thousand, nine".