784401 has 4 divisors (see below), whose sum is σ = 1045872. Its totient is φ = 522932.

The previous prime is 784387. The next prime is 784409. The reversal of 784401 is 104487.

784401 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 784401 - 2¹⁵ = 751633 is a prime.

It is a D-number.

It is not an unprimeable number, because it can be changed into a prime (784409) 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, 130731 + ... + 130736.

It is an arithmetic number, because the mean of its divisors is an integer number (261468).

2⁷⁸⁴⁴⁰¹ is an apocalyptic number.

It is an amenable number.

784401 is a deficient number, since it is larger than the sum of its proper divisors (261471).

784401 is a wasteful number, since it uses less digits than its factorization.

784401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 261470.

The product of its (nonzero) digits is 896, while the sum is 24.

The square root of 784401 is about 885.6641575676. The cubic root of 784401 is about 92.2244441221.

Adding to 784401 its reverse (104487), we get a palindrome (888888).

The spelling of 784401 in words is "seven hundred eighty-four thousand, four hundred one".