349731724249 has 2 divisors, whose sum is σ = 349731724250. Its totient is φ = 349731724248.

The previous prime is 349731724247. The next prime is 349731724271. The reversal of 349731724249 is 942427137943.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 291810638025 + 57921086224 = 540195^2 + 240668^2 .

It is a cyclic number.

It is not a de Polignac number, because 349731724249 - 2¹ = 349731724247 is a prime.

It is a super-2 number, since 2×349731724249² (a number of 24 digits) contains 22 as substring.

Together with 349731724247, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 349731724249.

It is not a weakly prime, because it can be changed into another prime (349731724247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 174865862124 + 174865862125.

It is an arithmetic number, because the mean of its divisors is an integer number (174865862125).

Almost surely, 2^349731724249 is an apocalyptic number.

It is an amenable number.

349731724249 is a deficient number, since it is larger than the sum of its proper divisors (1).

349731724249 is an equidigital number, since it uses as much as digits as its factorization.

349731724249 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9144576, while the sum is 55.

The spelling of 349731724249 in words is "three hundred forty-nine billion, seven hundred thirty-one million, seven hundred twenty-four thousand, two hundred forty-nine".