349692139 has 8 divisors (see below), whose sum is σ = 352265760. Its totient is φ = 347126976.

The previous prime is 349692127. The next prime is 349692151. The reversal of 349692139 is 931296943.

It is an interprime number because it is at equal distance from previous prime (349692127) and next prime (349692151).

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 349692139 - 2¹⁵ = 349659371 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (349192139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 97327 + ... + 100855.

It is an arithmetic number, because the mean of its divisors is an integer number (44033220).

Almost surely, 2^349692139 is an apocalyptic number.

349692139 is a deficient number, since it is larger than the sum of its proper divisors (2573621).

349692139 is a wasteful number, since it uses less digits than its factorization.

349692139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4229.

The product of its digits is 314928, while the sum is 46.

The square root of 349692139 is about 18700.0571924259. The cubic root of 349692139 is about 704.5231851235.

The spelling of 349692139 in words is "three hundred forty-nine million, six hundred ninety-two thousand, one hundred thirty-nine".