748809 has 24 divisors (see below), whose sum is σ = 1185600. Its totient is φ = 453600.

The previous prime is 748807. The next prime is 748817. The reversal of 748809 is 908847.

748809 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 748809 - 2¹ = 748807 is a prime.

It is a Curzon number.

748809 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (748801) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4884 + ... + 5034.

It is an arithmetic number, because the mean of its divisors is an integer number (49400).

2⁷⁴⁸⁸⁰⁹ is an apocalyptic number.

It is an amenable number.

748809 is a deficient number, since it is larger than the sum of its proper divisors (436791).

748809 is a wasteful number, since it uses less digits than its factorization.

748809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 205 (or 202 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 36.

The square root of 748809 is about 865.3375064101. The cubic root of 748809 is about 90.8079110368.

The spelling of 748809 in words is "seven hundred forty-eight thousand, eight hundred nine".