1409399 has 2 divisors, whose sum is σ = 1409400. Its totient is φ = 1409398.

The previous prime is 1409393. The next prime is 1409407. The reversal of 1409399 is 9939041.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1409399 - 2¹⁶ = 1343863 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1409393) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 704699 + 704700.

It is an arithmetic number, because the mean of its divisors is an integer number (704700).

2^1409399 is an apocalyptic number.

1409399 is a deficient number, since it is larger than the sum of its proper divisors (1).

1409399 is an equidigital number, since it uses as much as digits as its factorization.

1409399 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8748, while the sum is 35.

The square root of 1409399 is about 1187.1811150789. The cubic root of 1409399 is about 112.1186826524.

The spelling of 1409399 in words is "one million, four hundred nine thousand, three hundred ninety-nine".