340677749 has 2 divisors, whose sum is σ = 340677750. Its totient is φ = 340677748.

The previous prime is 340677737. The next prime is 340677791. The reversal of 340677749 is 947776043.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 340660849 + 16900 = 18457^2 + 130^2 .

It is an emirp because it is prime and its reverse (947776043) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 340677749 - 2²⁸ = 72242293 is a prime.

It is a super-2 number, since 2×340677749² = 232122657327414002, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (340677709) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 170338874 + 170338875.

It is an arithmetic number, because the mean of its divisors is an integer number (170338875).

Almost surely, 2^340677749 is an apocalyptic number.

It is an amenable number.

340677749 is a deficient number, since it is larger than the sum of its proper divisors (1).

340677749 is an equidigital number, since it uses as much as digits as its factorization.

340677749 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 889056, while the sum is 47.

The square root of 340677749 is about 18457.4578152030. The cubic root of 340677749 is about 698.4166587301.

The spelling of 340677749 in words is "three hundred forty million, six hundred seventy-seven thousand, seven hundred forty-nine".