1404745 has 4 divisors (see below), whose sum is σ = 1685700. Its totient is φ = 1123792.

The previous prime is 1404743. The next prime is 1404749. The reversal of 1404745 is 5474041.

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 1108809 + 295936 = 1053^2 + 544^2 .

It is a cyclic number.

It is not a de Polignac number, because 1404745 - 2¹ = 1404743 is a prime.

1404745 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (1404743) 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, 140470 + ... + 140479.

It is an arithmetic number, because the mean of its divisors is an integer number (421425).

2^1404745 is an apocalyptic number.

It is an amenable number.

1404745 is a deficient number, since it is larger than the sum of its proper divisors (280955).

1404745 is an equidigital number, since it uses as much as digits as its factorization.

1404745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 280954.

The product of its (nonzero) digits is 2240, while the sum is 25.

The square root of 1404745 is about 1185.2193889740. The cubic root of 1404745 is about 111.9951369062.

Adding to 1404745 its reverse (5474041), we get a palindrome (6878786).

The spelling of 1404745 in words is "one million, four hundred four thousand, seven hundred forty-five".