1404487 has 6 divisors (see below), whose sum is σ = 1633848. Its totient is φ = 1203804.

The previous prime is 1404479. The next prime is 1404497. The reversal of 1404487 is 7844041.

It is not a de Polignac number, because 1404487 - 2³ = 1404479 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1404427) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 14283 + ... + 14380.

It is an arithmetic number, because the mean of its divisors is an integer number (272308).

2^1404487 is an apocalyptic number.

1404487 is a deficient number, since it is larger than the sum of its proper divisors (229361).

1404487 is an equidigital number, since it uses as much as digits as its factorization.

1404487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28677 (or 28670 counting only the distinct ones).

The product of its (nonzero) digits is 3584, while the sum is 28.

The square root of 1404487 is about 1185.1105433672. The cubic root of 1404487 is about 111.9882800236.

It can be divided in two parts, 1404 and 487, that added together give a triangular number (1891 = T₆₁).

The spelling of 1404487 in words is "one million, four hundred four thousand, four hundred eighty-seven".