349408859 has 2 divisors, whose sum is σ = 349408860. Its totient is φ = 349408858.

The previous prime is 349408823. The next prime is 349408861. The reversal of 349408859 is 958804943.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (958804943) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 349408859 - 2⁸ = 349408603 is a prime.

It is a Sophie Germain prime.

Together with 349408861, 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 (349408889) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 174704429 + 174704430.

It is an arithmetic number, because the mean of its divisors is an integer number (174704430).

Almost surely, 2^349408859 is an apocalyptic number.

349408859 is a deficient number, since it is larger than the sum of its proper divisors (1).

349408859 is an equidigital number, since it uses as much as digits as its factorization.

349408859 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1244160, while the sum is 50.

The square root of 349408859 is about 18692.4813494624. The cubic root of 349408859 is about 704.3328927479.

The spelling of 349408859 in words is "three hundred forty-nine million, four hundred eight thousand, eight hundred fifty-nine".