918401 has 8 divisors (see below), whose sum is σ = 1036800. Its totient is φ = 805840.

The previous prime is 918397. The next prime is 918431. The reversal of 918401 is 104819.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 918401 - 2² = 918397 is a prime.

It is a Duffinian number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 918401.

It is not an unprimeable number, because it can be changed into a prime (918431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1121 + ... + 1758.

It is an arithmetic number, because the mean of its divisors is an integer number (129600).

2⁹¹⁸⁴⁰¹ is an apocalyptic number.

It is an amenable number.

918401 is a deficient number, since it is larger than the sum of its proper divisors (118399).

918401 is a wasteful number, since it uses less digits than its factorization.

918401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2919.

The product of its (nonzero) digits is 288, while the sum is 23.

The square root of 918401 is about 958.3324057967. The cubic root of 918401 is about 97.2025032238.

The spelling of 918401 in words is "nine hundred eighteen thousand, four hundred one".