349147691 has 8 divisors (see below), whose sum is σ = 351263040. Its totient is φ = 347038272.

The previous prime is 349147633. The next prime is 349147693. The reversal of 349147691 is 196741943.

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 349147691 - 2¹⁸ = 348885547 is a prime.

It is a super-2 number, since 2×349147691² = 243808220261262962, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (349147693) 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, 174191 + ... + 176183.

It is an arithmetic number, because the mean of its divisors is an integer number (43907880).

Almost surely, 2^349147691 is an apocalyptic number.

349147691 is a deficient number, since it is larger than the sum of its proper divisors (2115349).

349147691 is a wasteful number, since it uses less digits than its factorization.

349147691 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2965.

The product of its digits is 163296, while the sum is 44.

The square root of 349147691 is about 18685.4941331505. The cubic root of 349147691 is about 704.1573628888.

The spelling of 349147691 in words is "three hundred forty-nine million, one hundred forty-seven thousand, six hundred ninety-one".