349077857 has 2 divisors, whose sum is σ = 349077858. Its totient is φ = 349077856.

The previous prime is 349077829. The next prime is 349077863. The reversal of 349077857 is 758770943.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 339149056 + 9928801 = 18416^2 + 3151^2 .

It is a cyclic number.

It is not a de Polignac number, because 349077857 - 2⁶ = 349077793 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (349077257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 174538928 + 174538929.

It is an arithmetic number, because the mean of its divisors is an integer number (174538929).

Almost surely, 2^349077857 is an apocalyptic number.

It is an amenable number.

349077857 is a deficient number, since it is larger than the sum of its proper divisors (1).

349077857 is an equidigital number, since it uses as much as digits as its factorization.

349077857 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1481760, while the sum is 50.

The square root of 349077857 is about 18683.6253708963. The cubic root of 349077857 is about 704.1104129348.

The spelling of 349077857 in words is "three hundred forty-nine million, seventy-seven thousand, eight hundred fifty-seven".