349005491 has 2 divisors, whose sum is σ = 349005492. Its totient is φ = 349005490.

The previous prime is 349005421. The next prime is 349005499. The reversal of 349005491 is 194500943.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-349005491 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (349005499) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 174502745 + 174502746.

It is an arithmetic number, because the mean of its divisors is an integer number (174502746).

Almost surely, 2^349005491 is an apocalyptic number.

349005491 is a deficient number, since it is larger than the sum of its proper divisors (1).

349005491 is an equidigital number, since it uses as much as digits as its factorization.

349005491 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 19440, while the sum is 35.

The square root of 349005491 is about 18681.6886549370. The cubic root of 349005491 is about 704.0617540902.

The spelling of 349005491 in words is "three hundred forty-nine million, five thousand, four hundred ninety-one".