1409555409 has 16 divisors (see below), whose sum is σ = 1902426240. Its totient is φ = 928247040.

The previous prime is 1409555393. The next prime is 1409555423. The reversal of 1409555409 is 9045559041.

It is not a de Polignac number, because 1409555409 - 2⁴ = 1409555393 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1409555909) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 103804 + ... + 116594.

It is an arithmetic number, because the mean of its divisors is an integer number (118901640).

Almost surely, 2^1409555409 is an apocalyptic number.

It is an amenable number.

1409555409 is a deficient number, since it is larger than the sum of its proper divisors (492870831).

1409555409 is a wasteful number, since it uses less digits than its factorization.

1409555409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13240.

The product of its (nonzero) digits is 162000, while the sum is 42.

The square root of 1409555409 is about 37544.0462523687. The cubic root of 1409555409 is about 1121.2282998103.

The spelling of 1409555409 in words is "one billion, four hundred nine million, five hundred fifty-five thousand, four hundred nine".