1404641 has 8 divisors (see below), whose sum is σ = 1657344. Its totient is φ = 1164960.

The previous prime is 1404617. The next prime is 1404643. The reversal of 1404641 is 1464041.

1404641 = T₆₃₀ + T₆₃₁ + ... + T₆₃₆.

It is a happy number.

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 1404641 - 2⁶ = 1404577 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 (1404643) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3020 + ... + 3453.

It is an arithmetic number, because the mean of its divisors is an integer number (207168).

2^1404641 is an apocalyptic number.

It is an amenable number.

1404641 is a deficient number, since it is larger than the sum of its proper divisors (252703).

1404641 is an equidigital number, since it uses as much as digits as its factorization.

1404641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6511.

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 1404641 is about 1185.1755144281. The cubic root of 1404641 is about 111.9923729925.

Adding to 1404641 its reverse (1464041), we get a palindrome (2868682).

The spelling of 1404641 in words is "one million, four hundred four thousand, six hundred forty-one".