1404869 has 2 divisors, whose sum is σ = 1404870. Its totient is φ = 1404868.

The previous prime is 1404859. The next prime is 1404881. The reversal of 1404869 is 9684041.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1322500 + 82369 = 1150^2 + 287^2 .

It is a cyclic number.

It is not a de Polignac number, because 1404869 - 2¹⁶ = 1339333 is a prime.

It is a super-2 number, since 2×1404869² = 3947313814322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1404859) 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 as a sum of consecutive naturals, namely, 702434 + 702435.

It is an arithmetic number, because the mean of its divisors is an integer number (702435).

2^1404869 is an apocalyptic number.

It is an amenable number.

1404869 is a deficient number, since it is larger than the sum of its proper divisors (1).

1404869 is an equidigital number, since it uses as much as digits as its factorization.

1404869 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6912, while the sum is 32.

The square root of 1404869 is about 1185.2716988100. The cubic root of 1404869 is about 111.9984321634.

The spelling of 1404869 in words is "one million, four hundred four thousand, eight hundred sixty-nine".