1345399 has 6 divisors (see below), whose sum is σ = 1478960. Its totient is φ = 1222980.

The previous prime is 1345361. The next prime is 1345423. The reversal of 1345399 is 9935431.

It is not a de Polignac number, because 1345399 - 2⁷ = 1345271 is a prime.

It is a Duffinian number.

1345399 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1345349) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5439 + ... + 5680.

2^1345399 is an apocalyptic number.

1345399 is a deficient number, since it is larger than the sum of its proper divisors (133561).

1345399 is a wasteful number, since it uses less digits than its factorization.

1345399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11141 (or 11130 counting only the distinct ones).

The product of its digits is 14580, while the sum is 34.

The square root of 1345399 is about 1159.9133588333. The cubic root of 1345399 is about 110.3952447980.

The spelling of 1345399 in words is "one million, three hundred forty-five thousand, three hundred ninety-nine".