1409345 has 16 divisors (see below), whose sum is σ = 1964928. Its totient is φ = 950400.

The previous prime is 1409341. The next prime is 1409357. The reversal of 1409345 is 5439041.

It is not a de Polignac number, because 1409345 - 2² = 1409341 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1409341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2045 + ... + 2645.

It is an arithmetic number, because the mean of its divisors is an integer number (122808).

2^1409345 is an apocalyptic number.

It is an amenable number.

1409345 is a deficient number, since it is larger than the sum of its proper divisors (555583).

1409345 is an equidigital number, since it uses as much as digits as its factorization.

1409345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 680.

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 1409345 is about 1187.1583719117. The cubic root of 1409345 is about 112.1172507215.

The spelling of 1409345 in words is "one million, four hundred nine thousand, three hundred forty-five".