349449689 has 8 divisors (see below), whose sum is σ = 358656480. Its totient is φ = 340360416.

The previous prime is 349449679. The next prime is 349449703. The reversal of 349449689 is 986944943.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 349449689 - 2²⁰ = 348401113 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (349449679) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23339 + ... + 35264.

It is an arithmetic number, because the mean of its divisors is an integer number (44832060).

Almost surely, 2^349449689 is an apocalyptic number.

It is an amenable number.

349449689 is a deficient number, since it is larger than the sum of its proper divisors (9206791).

349449689 is an equidigital number, since it uses as much as digits as its factorization.

349449689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58759.

The product of its digits is 6718464, while the sum is 56.

The square root of 349449689 is about 18693.5734679060. The cubic root of 349449689 is about 704.3603265036.

The spelling of 349449689 in words is "three hundred forty-nine million, four hundred forty-nine thousand, six hundred eighty-nine".