1404247 has 8 divisors (see below), whose sum is σ = 1527680. Its totient is φ = 1283040.

The previous prime is 1404229. The next prime is 1404257. The reversal of 1404247 is 7424041.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1404247 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1404257) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 922 + ... + 1912.

It is an arithmetic number, because the mean of its divisors is an integer number (190960).

2^1404247 is an apocalyptic number.

1404247 is a deficient number, since it is larger than the sum of its proper divisors (123433).

1404247 is a wasteful number, since it uses less digits than its factorization.

1404247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1113.

The product of its (nonzero) digits is 896, while the sum is 22.

The square root of 1404247 is about 1185.0092826641. The cubic root of 1404247 is about 111.9819007743.

Subtracting from 1404247 its sum of digits (22), we obtain a square (1404225 = 1185²).

Adding to 1404247 its reverse (7424041), we get a palindrome (8828288).

The spelling of 1404247 in words is "one million, four hundred four thousand, two hundred forty-seven".