1404350612809 has 9 divisors (see below), whose sum is σ = 1491840218037. Its totient is φ = 1321722792384.

The previous prime is 1404350612761. The next prime is 1404350612827. The reversal of 1404350612809 is 9082160534041.

The square root of 1404350612809 is 1185053.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 211825460025 + 1192525152784 = 460245^2 + 1092028^2 .

It is not a de Polignac number, because 1404350612809 - 2⁹ = 1404350612297 is a prime.

It is a super-3 number, since 3×1404350612809³ (a number of 37 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1404350612879) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 20111047 + ... + 20180755.

Almost surely, 2^{1404350612809} is an apocalyptic number.

1404350612809 is the 1185053-rd square number.

1404350612809 is the 592527-th centered octagonal number.

It is an amenable number.

1404350612809 is a deficient number, since it is larger than the sum of its proper divisors (87489605228).

1404350612809 is an frugal number, since it uses more digits than its factorization.

1404350612809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139452 (or 69726 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 43.

The spelling of 1404350612809 in words is "one trillion, four hundred four billion, three hundred fifty million, six hundred twelve thousand, eight hundred nine".