349478819 has 2 divisors, whose sum is σ = 349478820. Its totient is φ = 349478818.

The previous prime is 349478783. The next prime is 349478849. The reversal of 349478819 is 918874943.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-349478819 is a prime.

It is a super-2 number, since 2×349478819² = 244270889859269522, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (349478849) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 174739409 + 174739410.

It is an arithmetic number, because the mean of its divisors is an integer number (174739410).

Almost surely, 2^349478819 is an apocalyptic number.

349478819 is a deficient number, since it is larger than the sum of its proper divisors (1).

349478819 is an equidigital number, since it uses as much as digits as its factorization.

349478819 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1741824, while the sum is 53.

The square root of 349478819 is about 18694.3525964394. The cubic root of 349478819 is about 704.3798977007.

The spelling of 349478819 in words is "three hundred forty-nine million, four hundred seventy-eight thousand, eight hundred nineteen".