801409 has 4 divisors (see below), whose sum is σ = 915904. Its totient is φ = 686916.

The previous prime is 801407. The next prime is 801419. The reversal of 801409 is 904108.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 801409 - 2¹ = 801407 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 801409.

It is not an unprimeable number, because it can be changed into a prime (801403) 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, 57237 + ... + 57250.

It is an arithmetic number, because the mean of its divisors is an integer number (228976).

2⁸⁰¹⁴⁰⁹ is an apocalyptic number.

It is an amenable number.

801409 is a deficient number, since it is larger than the sum of its proper divisors (114495).

801409 is a wasteful number, since it uses less digits than its factorization.

801409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114494.

The product of its (nonzero) digits is 288, while the sum is 22.

The square root of 801409 is about 895.2144994357. The cubic root of 801409 is about 92.8862446964.

The spelling of 801409 in words is "eight hundred one thousand, four hundred nine".