1345409 has 12 divisors (see below), whose sum is σ = 1537200. Its totient is φ = 1173744.

The previous prime is 1345361. The next prime is 1345423. The reversal of 1345409 is 9045431.

It is not a de Polignac number, because 1345409 - 2⁸ = 1345153 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1345009) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3002 + ... + 3420.

It is an arithmetic number, because the mean of its divisors is an integer number (128100).

2^1345409 is an apocalyptic number.

1345409 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

1345409 is a deficient number, since it is larger than the sum of its proper divisors (191791).

1345409 is a wasteful number, since it uses less digits than its factorization.

1345409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 464 (or 451 counting only the distinct ones).

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

The square root of 1345409 is about 1159.9176694921. The cubic root of 1345409 is about 110.3955183103.

The spelling of 1345409 in words is "one million, three hundred forty-five thousand, four hundred nine".