349054857 has 6 divisors (see below), whose sum is σ = 504190362. Its totient is φ = 232703232.

The previous prime is 349054841. The next prime is 349054859. The reversal of 349054857 is 758450943.

It can be written as a sum of positive squares in only one way, i.e., 323136576 + 25918281 = 17976^2 + 5091^2 .

It is not a de Polignac number, because 349054857 - 2⁴ = 349054841 is a prime.

It is not an unprimeable number, because it can be changed into a prime (349054859) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 19391928 + ... + 19391945.

It is an arithmetic number, because the mean of its divisors is an integer number (84031727).

Almost surely, 2^349054857 is an apocalyptic number.

It is an amenable number.

349054857 is a deficient number, since it is larger than the sum of its proper divisors (155135505).

349054857 is a wasteful number, since it uses less digits than its factorization.

349054857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38783879 (or 38783876 counting only the distinct ones).

The product of its (nonzero) digits is 604800, while the sum is 45.

The square root of 349054857 is about 18683.0098485228. The cubic root of 349054857 is about 704.0949484810.

The spelling of 349054857 in words is "three hundred forty-nine million, fifty-four thousand, eight hundred fifty-seven".