349865497839 has 16 divisors (see below), whose sum is σ = 548041060224. Its totient is φ = 195728949600.

The previous prime is 349865497837. The next prime is 349865497841. The reversal of 349865497839 is 938794568943.

It is an interprime number because it is at equal distance from previous prime (349865497837) and next prime (349865497841).

It is not a de Polignac number, because 349865497839 - 2¹ = 349865497837 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (349865497837) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 407768217 + ... + 407769074.

It is an arithmetic number, because the mean of its divisors is an integer number (34252566264).

Almost surely, 2^349865497839 is an apocalyptic number.

349865497839 is a gapful number since it is divisible by the number (39) formed by its first and last digit.

349865497839 is a deficient number, since it is larger than the sum of its proper divisors (198175562385).

349865497839 is a wasteful number, since it uses less digits than its factorization.

349865497839 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 815537318.

The product of its digits is 1410877440, while the sum is 75.

The spelling of 349865497839 in words is "three hundred forty-nine billion, eight hundred sixty-five million, four hundred ninety-seven thousand, eight hundred thirty-nine".