340145969 has 2 divisors, whose sum is σ = 340145970. Its totient is φ = 340145968.

The previous prime is 340145957. The next prime is 340145983. The reversal of 340145969 is 969541043.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 291145969 + 49000000 = 17063^2 + 7000^2 .

It is an emirp because it is prime and its reverse (969541043) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-340145969 is a prime.

It is a super-2 number, since 2×340145969² = 231398560453897922, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (340145989) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 170072984 + 170072985.

It is an arithmetic number, because the mean of its divisors is an integer number (170072985).

Almost surely, 2^340145969 is an apocalyptic number.

It is an amenable number.

340145969 is a deficient number, since it is larger than the sum of its proper divisors (1).

340145969 is an equidigital number, since it uses as much as digits as its factorization.

340145969 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 116640, while the sum is 41.

The square root of 340145969 is about 18443.0466300988. The cubic root of 340145969 is about 698.0530722940.

The spelling of 340145969 in words is "three hundred forty million, one hundred forty-five thousand, nine hundred sixty-nine".