349703782405 has 4 divisors (see below), whose sum is σ = 419644538892. Its totient is φ = 279763025920.

The previous prime is 349703782391. The next prime is 349703782543. The reversal of 349703782405 is 504287307943.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 185780826529 + 163922955876 = 431023^2 + 404874^2 .

It is not a de Polignac number, because 349703782405 - 2¹³ = 349703774213 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34970378236 + ... + 34970378245.

It is an arithmetic number, because the mean of its divisors is an integer number (104911134723).

Almost surely, 2^349703782405 is an apocalyptic number.

It is an amenable number.

349703782405 is a deficient number, since it is larger than the sum of its proper divisors (69940756487).

349703782405 is an equidigital number, since it uses as much as digits as its factorization.

349703782405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69940756486.

The product of its (nonzero) digits is 5080320, while the sum is 52.

The spelling of 349703782405 in words is "three hundred forty-nine billion, seven hundred three million, seven hundred eighty-two thousand, four hundred five".