1406897409 has 8 divisors (see below), whose sum is σ = 1895202400. Its totient is φ = 928262016.

The previous prime is 1406897381. The next prime is 1406897431. The reversal of 1406897409 is 9047986041.

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

It is not a de Polignac number, because 1406897409 - 2¹³ = 1406889217 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1406897489) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2417059 + ... + 2417640.

It is an arithmetic number, because the mean of its divisors is an integer number (236900300).

Almost surely, 2^1406897409 is an apocalyptic number.

It is an amenable number.

1406897409 is a deficient number, since it is larger than the sum of its proper divisors (488304991).

1406897409 is an equidigital number, since it uses as much as digits as its factorization.

1406897409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4834799.

The product of its (nonzero) digits is 435456, while the sum is 48.

The square root of 1406897409 is about 37508.6311267154. The cubic root of 1406897409 is about 1120.5230892553.

The spelling of 1406897409 in words is "one billion, four hundred six million, eight hundred ninety-seven thousand, four hundred nine".