1345009 has 2 divisors, whose sum is σ = 1345010. Its totient is φ = 1345008.

The previous prime is 1344979. The next prime is 1345013. The reversal of 1345009 is 9005431.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 950625 + 394384 = 975^2 + 628^2 .

It is a cyclic number.

It is not a de Polignac number, because 1345009 - 2¹³ = 1336817 is a prime.

It is an Ulam number.

It is not a weakly prime, because it can be changed into another prime (1345079) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 672504 + 672505.

It is an arithmetic number, because the mean of its divisors is an integer number (672505).

2^1345009 is an apocalyptic number.

It is an amenable number.

1345009 is a deficient number, since it is larger than the sum of its proper divisors (1).

1345009 is an equidigital number, since it uses as much as digits as its factorization.

1345009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 540, while the sum is 22.

The square root of 1345009 is about 1159.7452306434. The cubic root of 1345009 is about 110.3845767592.

The spelling of 1345009 in words is "one million, three hundred forty-five thousand, nine".