14400409 has 2 divisors, whose sum is σ = 14400410. Its totient is φ = 14400408.

The previous prime is 14400383. The next prime is 14400413. The reversal of 14400409 is 90400441.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9018009 + 5382400 = 3003^2 + 2320^2 .

It is a cyclic number.

It is not a de Polignac number, because 14400409 - 2¹⁷ = 14269337 is a prime.

It is a nialpdrome in base 16.

It is a self number, because there is not a number n which added to its sum of digits gives 14400409.

It is not a weakly prime, because it can be changed into another prime (14400509) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7200204 + 7200205.

It is an arithmetic number, because the mean of its divisors is an integer number (7200205).

Almost surely, 2^14400409 is an apocalyptic number.

It is an amenable number.

14400409 is a deficient number, since it is larger than the sum of its proper divisors (1).

14400409 is an equidigital number, since it uses as much as digits as its factorization.

14400409 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 14400409 is about 3794.7870823012. The cubic root of 14400409 is about 243.2903831536.

The spelling of 14400409 in words is "fourteen million, four hundred thousand, four hundred nine".