340475549 has 2 divisors, whose sum is σ = 340475550. Its totient is φ = 340475548.

The previous prime is 340475503. The next prime is 340475593. The reversal of 340475549 is 945574043.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 222904900 + 117570649 = 14930^2 + 10843^2 .

It is an emirp because it is prime and its reverse (945574043) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 340475549 - 2¹⁶ = 340410013 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (340475749) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 170237774 + 170237775.

It is an arithmetic number, because the mean of its divisors is an integer number (170237775).

Almost surely, 2^340475549 is an apocalyptic number.

It is an amenable number.

340475549 is a deficient number, since it is larger than the sum of its proper divisors (1).

340475549 is an equidigital number, since it uses as much as digits as its factorization.

340475549 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 302400, while the sum is 41.

The square root of 340475549 is about 18451.9795415018. The cubic root of 340475549 is about 698.2784559886.

The spelling of 340475549 in words is "three hundred forty million, four hundred seventy-five thousand, five hundred forty-nine".