349485139 has 2 divisors, whose sum is σ = 349485140. Its totient is φ = 349485138.

The previous prime is 349485137. The next prime is 349485163. The reversal of 349485139 is 931584943.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (931584943) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 349485139 - 2¹ = 349485137 is a prime.

Together with 349485137, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (349485131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 174742569 + 174742570.

It is an arithmetic number, because the mean of its divisors is an integer number (174742570).

Almost surely, 2^349485139 is an apocalyptic number.

349485139 is a deficient number, since it is larger than the sum of its proper divisors (1).

349485139 is an equidigital number, since it uses as much as digits as its factorization.

349485139 is an evil number, because the sum of its binary digits is even.

The product of its digits is 466560, while the sum is 46.

The square root of 349485139 is about 18694.5216306810. The cubic root of 349485139 is about 704.3841436940.

The spelling of 349485139 in words is "three hundred forty-nine million, four hundred eighty-five thousand, one hundred thirty-nine".