349899479 has 2 divisors, whose sum is σ = 349899480. Its totient is φ = 349899478.

The previous prime is 349899427. The next prime is 349899493. The reversal of 349899479 is 974998943.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-349899479 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (349899409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 174949739 + 174949740.

It is an arithmetic number, because the mean of its divisors is an integer number (174949740).

Almost surely, 2^349899479 is an apocalyptic number.

349899479 is a deficient number, since it is larger than the sum of its proper divisors (1).

349899479 is an equidigital number, since it uses as much as digits as its factorization.

349899479 is an evil number, because the sum of its binary digits is even.

The product of its digits is 17635968, while the sum is 62.

The square root of 349899479 is about 18705.6002042169. The cubic root of 349899479 is about 704.6623999355.

The spelling of 349899479 in words is "three hundred forty-nine million, eight hundred ninety-nine thousand, four hundred seventy-nine".