1404407645 has 8 divisors (see below), whose sum is σ = 1726394040. Its totient is φ = 1096122880.

The previous prime is 1404407581. The next prime is 1404407647. The reversal of 1404407645 is 5467044041.

It can be written as a sum of positive squares in 4 ways, for example, as 202606756 + 1201800889 = 14234^2 + 34667^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1404407645 - 2⁶ = 1404407581 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1404407647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3425180 + ... + 3425589.

It is an arithmetic number, because the mean of its divisors is an integer number (215799255).

Almost surely, 2^1404407645 is an apocalyptic number.

It is an amenable number.

1404407645 is a deficient number, since it is larger than the sum of its proper divisors (321986395).

1404407645 is an equidigital number, since it uses as much as digits as its factorization.

1404407645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6850815.

The product of its (nonzero) digits is 53760, while the sum is 35.

The square root of 1404407645 is about 37475.4272157103. The cubic root of 1404407645 is about 1119.8617083185.

The spelling of 1404407645 in words is "one billion, four hundred four million, four hundred seven thousand, six hundred forty-five".