801239 has 4 divisors (see below), whose sum is σ = 805056. Its totient is φ = 797424.

The previous prime is 801217. The next prime is 801247. The reversal of 801239 is 932108.

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

It is a cyclic number.

It is not a de Polignac number, because 801239 - 2¹² = 797143 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 (801289) 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, 1574 + ... + 2019.

It is an arithmetic number, because the mean of its divisors is an integer number (201264).

2⁸⁰¹²³⁹ is an apocalyptic number.

801239 is a deficient number, since it is larger than the sum of its proper divisors (3817).

801239 is a wasteful number, since it uses less digits than its factorization.

801239 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3816.

The product of its (nonzero) digits is 432, while the sum is 23.

The square root of 801239 is about 895.1195450888. The cubic root of 801239 is about 92.8796763573.

The spelling of 801239 in words is "eight hundred one thousand, two hundred thirty-nine".