349689854 has 4 divisors (see below), whose sum is σ = 524534784. Its totient is φ = 174844926.

The previous prime is 349689833. The next prime is 349689869. The reversal of 349689854 is 458986943.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a self number, because there is not a number n which added to its sum of digits gives 349689854.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 87422462 + ... + 87422465.

It is an arithmetic number, because the mean of its divisors is an integer number (131133696).

Almost surely, 2^349689854 is an apocalyptic number.

349689854 is a deficient number, since it is larger than the sum of its proper divisors (174844930).

349689854 is a wasteful number, since it uses less digits than its factorization.

349689854 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 174844929.

The product of its digits is 7464960, while the sum is 56.

The square root of 349689854 is about 18699.9960962563. The cubic root of 349689854 is about 704.5216505937.

The spelling of 349689854 in words is "three hundred forty-nine million, six hundred eighty-nine thousand, eight hundred fifty-four".