349739519 has 4 divisors (see below), whose sum is σ = 349777344. Its totient is φ = 349701696.

The previous prime is 349739513. The next prime is 349739561. The reversal of 349739519 is 915937943.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 915937943 = 29 ⋅31584067.

It is a cyclic number.

It is not a de Polignac number, because 349739519 - 2¹² = 349735423 is a prime.

It is a super-3 number, since 3×349739519³ (a number of 27 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (349739513) 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, 5234 + ... + 26960.

It is an arithmetic number, because the mean of its divisors is an integer number (87444336).

Almost surely, 2^349739519 is an apocalyptic number.

349739519 is a deficient number, since it is larger than the sum of its proper divisors (37825).

349739519 is a wasteful number, since it uses less digits than its factorization.

349739519 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37824.

The product of its digits is 918540, while the sum is 50.

The square root of 349739519 is about 18701.3239905628. The cubic root of 349739519 is about 704.5550024444. Note that the first 3 decimals are identical.

The spelling of 349739519 in words is "three hundred forty-nine million, seven hundred thirty-nine thousand, five hundred nineteen".