349917139 has 8 divisors (see below), whose sum is σ = 411091632. Its totient is φ = 293636640.

The previous prime is 349917133. The next prime is 349917143. The reversal of 349917139 is 931719943.

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

It is a de Polignac number, because none of the positive numbers 2^k-349917139 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (349917133) 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, 1223344 + ... + 1223629.

It is an arithmetic number, because the mean of its divisors is an integer number (51386454).

Almost surely, 2^349917139 is an apocalyptic number.

349917139 is a deficient number, since it is larger than the sum of its proper divisors (61174493).

349917139 is a wasteful number, since it uses less digits than its factorization.

349917139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2446997.

The product of its digits is 183708, while the sum is 46.

The square root of 349917139 is about 18706.0722494061. The cubic root of 349917139 is about 704.6742548914.

The spelling of 349917139 in words is "three hundred forty-nine million, nine hundred seventeen thousand, one hundred thirty-nine".