349249866 has 32 divisors (see below), whose sum is σ = 799738368. Its totient is φ = 99604080.

The previous prime is 349249861. The next prime is 349249883. The reversal of 349249866 is 668942943.

It is not an unprimeable number, because it can be changed into a prime (349249861) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16701 + ... + 31263.

It is an arithmetic number, because the mean of its divisors is an integer number (24991824).

Almost surely, 2^349249866 is an apocalyptic number.

349249866 is an abundant number, since it is smaller than the sum of its proper divisors (450488502).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

349249866 is a wasteful number, since it uses less digits than its factorization.

349249866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15146.

The product of its digits is 2239488, while the sum is 51.

The square root of 349249866 is about 18688.2280058865. The cubic root of 349249866 is about 704.2260446752.

The spelling of 349249866 in words is "three hundred forty-nine million, two hundred forty-nine thousand, eight hundred sixty-six".