869401 has 4 divisors (see below), whose sum is σ = 936292. Its totient is φ = 802512.

The previous prime is 869399. The next prime is 869413. The reversal of 869401 is 104968.

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 57600 + 811801 = 240^2 + 901^2 .

It is a cyclic number.

It is not a de Polignac number, because 869401 - 2¹ = 869399 is a prime.

It is a Duffinian number.

869401 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 869401.

It is not an unprimeable number, because it can be changed into a prime (869461) 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, 33426 + ... + 33451.

It is an arithmetic number, because the mean of its divisors is an integer number (234073).

2⁸⁶⁹⁴⁰¹ is an apocalyptic number.

It is an amenable number.

869401 is a deficient number, since it is larger than the sum of its proper divisors (66891).

869401 is a wasteful number, since it uses less digits than its factorization.

869401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66890.

The product of its (nonzero) digits is 1728, while the sum is 28.

The square root of 869401 is about 932.4167523163. The cubic root of 869401 is about 95.4421128864.

The spelling of 869401 in words is "eight hundred sixty-nine thousand, four hundred one".