349694351 has 4 divisors (see below), whose sum is σ = 350994600. Its totient is φ = 348394104.

The previous prime is 349694341. The next prime is 349694381. The reversal of 349694351 is 153496943.

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

It is a cyclic number.

It is not a de Polignac number, because 349694351 - 2¹⁸ = 349432207 is a prime.

It is a super-2 number, since 2×349694351² = 244572278242622402, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (349694311) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 649721 + ... + 650258.

It is an arithmetic number, because the mean of its divisors is an integer number (87748650).

Almost surely, 2^349694351 is an apocalyptic number.

349694351 is a deficient number, since it is larger than the sum of its proper divisors (1300249).

349694351 is a wasteful number, since it uses less digits than its factorization.

349694351 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1300248.

The product of its digits is 349920, while the sum is 44.

The square root of 349694351 is about 18700.1163365365. The cubic root of 349694351 is about 704.5246706225.

The spelling of 349694351 in words is "three hundred forty-nine million, six hundred ninety-four thousand, three hundred fifty-one".