1404431 has 8 divisors (see below), whose sum is σ = 1612704. Its totient is φ = 1198080.

The previous prime is 1404427. The next prime is 1404437. The reversal of 1404431 is 1344041.

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 1404431 - 2² = 1404427 is a prime.

It is a super-2 number, since 2×1404431² = 3944852867522, which contains 22 as substring.

It is a Duffinian number.

It is a plaindrome in base 12.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1404437) 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, 1871 + ... + 2511.

It is an arithmetic number, because the mean of its divisors is an integer number (201588).

2^1404431 is an apocalyptic number.

1404431 is a deficient number, since it is larger than the sum of its proper divisors (208273).

1404431 is an equidigital number, since it uses as much as digits as its factorization.

1404431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 961.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 1404431 is about 1185.0869166437. The cubic root of 1404431 is about 111.9867915971.

Adding to 1404431 its reverse (1344041), we get a palindrome (2748472).

The spelling of 1404431 in words is "one million, four hundred four thousand, four hundred thirty-one".