1404287 has 2 divisors, whose sum is σ = 1404288. Its totient is φ = 1404286.

The previous prime is 1404283. The next prime is 1404289. The reversal of 1404287 is 7824041.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1404287 - 2² = 1404283 is a prime.

Together with 1404289, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1404283) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 702143 + 702144.

It is an arithmetic number, because the mean of its divisors is an integer number (702144).

2^1404287 is an apocalyptic number.

1404287 is a deficient number, since it is larger than the sum of its proper divisors (1).

1404287 is an equidigital number, since it uses as much as digits as its factorization.

1404287 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1792, while the sum is 26.

The square root of 1404287 is about 1185.0261600488. The cubic root of 1404287 is about 111.9829640330.

The spelling of 1404287 in words is "one million, four hundred four thousand, two hundred eighty-seven".