1404481 has 4 divisors (see below), whose sum is σ = 1512532. Its totient is φ = 1296432.

The previous prime is 1404479. The next prime is 1404497. The reversal of 1404481 is 1844041.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 194481 + 1210000 = 441^2 + 1100^2 .

It is a cyclic number.

It is not a de Polignac number, because 1404481 - 2¹ = 1404479 is a prime.

It is a super-2 number, since 2×1404481² = 3945133758722, which contains 22 as substring.

It is a Duffinian number.

1404481 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (1404181) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 54006 + ... + 54031.

It is an arithmetic number, because the mean of its divisors is an integer number (378133).

2^1404481 is an apocalyptic number.

It is an amenable number.

1404481 is a deficient number, since it is larger than the sum of its proper divisors (108051).

1404481 is a wasteful number, since it uses less digits than its factorization.

1404481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108050.

The product of its (nonzero) digits is 512, while the sum is 22.

The square root of 1404481 is about 1185.1080119550. The cubic root of 1404481 is about 111.9881205513.

The spelling of 1404481 in words is "one million, four hundred four thousand, four hundred eighty-one".