349540319 has 4 divisors (see below), whose sum is σ = 353964960. Its totient is φ = 345115680.

The previous prime is 349540271. The next prime is 349540379. The reversal of 349540319 is 913045943.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 913045943 = 15451 ⋅59093.

It is a cyclic number.

It is not a de Polignac number, because 349540319 - 2⁸ = 349540063 is a prime.

It is a super-2 number, since 2×349540319² = 244356869213243522, 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 (349540379) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2212202 + ... + 2212359.

It is an arithmetic number, because the mean of its divisors is an integer number (88491240).

Almost surely, 2^349540319 is an apocalyptic number.

349540319 is a deficient number, since it is larger than the sum of its proper divisors (4424641).

349540319 is an equidigital number, since it uses as much as digits as its factorization.

349540319 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4424640.

The product of its (nonzero) digits is 58320, while the sum is 38.

The square root of 349540319 is about 18695.9974058620. The cubic root of 349540319 is about 704.4212133404.

The spelling of 349540319 in words is "three hundred forty-nine million, five hundred forty thousand, three hundred nineteen".