1404012609 has 20 divisors (see below), whose sum is σ = 2220728004. Its totient is φ = 880948224.

The previous prime is 1404012607. The next prime is 1404012611. The reversal of 1404012609 is 9062104041.

1404012609 is a `hidden beast` number, since 1 + 4 + 0 + 40 + 12 + 609 = 666.

It is an interprime number because it is at equal distance from previous prime (1404012607) and next prime (1404012611).

It can be written as a sum of positive squares in 2 ways, for example, as 1045099584 + 358913025 = 32328^2 + 18945^2 .

It is not a de Polignac number, because 1404012609 - 2¹ = 1404012607 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (1404012601) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 508432 + ... + 511185.

Almost surely, 2^1404012609 is an apocalyptic number.

It is an amenable number.

1404012609 is a deficient number, since it is larger than the sum of its proper divisors (816715395).

1404012609 is a wasteful number, since it uses less digits than its factorization.

1404012609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1019646 (or 1019637 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 1404012609 is about 37470.1562446702. The cubic root of 1404012609 is about 1119.7566991173.

The spelling of 1404012609 in words is "one billion, four hundred four million, twelve thousand, six hundred nine".