844490401 has 4 divisors (see below), whose sum is σ = 856384704. Its totient is φ = 832596100.

The previous prime is 844490369. The next prime is 844490431. The reversal of 844490401 is 104094448.

844490401 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 844490401 - 2⁵ = 844490369 is a prime.

It is a super-2 number, since 2×844490401² = 1426328074762281602, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (844490431) 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, 5947045 + ... + 5947186.

It is an arithmetic number, because the mean of its divisors is an integer number (214096176).

Almost surely, 2^844490401 is an apocalyptic number.

It is an amenable number.

844490401 is a deficient number, since it is larger than the sum of its proper divisors (11894303).

844490401 is a wasteful number, since it uses less digits than its factorization.

844490401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11894302.

The product of its (nonzero) digits is 18432, while the sum is 34.

The square root of 844490401 is about 29060.1170162820. The cubic root of 844490401 is about 945.2171056661.

The spelling of 844490401 in words is "eight hundred forty-four million, four hundred ninety thousand, four hundred one".