1409999 has 2 divisors, whose sum is σ = 1410000. Its totient is φ = 1409998.

The previous prime is 1409977. The next prime is 1410007. The reversal of 1409999 is 9999041.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1409999 - 2¹⁶ = 1344463 is a prime.

It is a Chen prime.

1409999 is a modest number, since divided by 9999 gives 140 as remainder.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1409299) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 704999 + 705000.

It is an arithmetic number, because the mean of its divisors is an integer number (705000).

2^1409999 is an apocalyptic number.

1409999 is a deficient number, since it is larger than the sum of its proper divisors (1).

1409999 is an equidigital number, since it uses as much as digits as its factorization.

1409999 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 26244, while the sum is 41.

The square root of 1409999 is about 1187.4337876278. The cubic root of 1409999 is about 112.1345905360.

The spelling of 1409999 in words is "one million, four hundred nine thousand, nine hundred ninety-nine".