349408823 has 2 divisors, whose sum is σ = 349408824. Its totient is φ = 349408822.

The previous prime is 349408799. The next prime is 349408859. The reversal of 349408823 is 328804943.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 349408823 - 2⁸ = 349408567 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (349408523) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 174704411 + 174704412.

It is an arithmetic number, because the mean of its divisors is an integer number (174704412).

Almost surely, 2^349408823 is an apocalyptic number.

349408823 is a deficient number, since it is larger than the sum of its proper divisors (1).

349408823 is an equidigital number, since it uses as much as digits as its factorization.

349408823 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 165888, while the sum is 41.

The square root of 349408823 is about 18692.4803865084. The cubic root of 349408823 is about 704.3328685585.

The spelling of 349408823 in words is "three hundred forty-nine million, four hundred eight thousand, eight hundred twenty-three".