349961985 has 16 divisors (see below), whose sum is σ = 622154880. Its totient is φ = 186646320.

The previous prime is 349961959. The next prime is 349961987. The reversal of 349961985 is 589169943.

349961985 is a `hidden beast` number, since 3 + 499 + 61 + 98 + 5 = 666.

It is not a de Polignac number, because 349961985 - 2⁶ = 349961921 is a prime.

It is not an unprimeable number, because it can be changed into a prime (349961987) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1296021 + ... + 1296290.

It is an arithmetic number, because the mean of its divisors is an integer number (38884680).

Almost surely, 2^349961985 is an apocalyptic number.

It is an amenable number.

349961985 is a deficient number, since it is larger than the sum of its proper divisors (272192895).

349961985 is a wasteful number, since it uses less digits than its factorization.

349961985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2592325 (or 2592319 counting only the distinct ones).

The product of its digits is 2099520, while the sum is 54.

The square root of 349961985 is about 18707.2709126692. The cubic root of 349961985 is about 704.7043577054.

The spelling of 349961985 in words is "three hundred forty-nine million, nine hundred sixty-one thousand, nine hundred eighty-five".