349903484789 has 4 divisors (see below), whose sum is σ = 349905898956. Its totient is φ = 349901070624.

The previous prime is 349903484783. The next prime is 349903484849. The reversal of 349903484789 is 987484309943.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 987484309943 = 3167 ⋅311804329.

It can be written as a sum of positive squares in 2 ways, for example, as 147641914564 + 202261570225 = 384242^2 + 449735^2 .

It is a cyclic number.

It is not a de Polignac number, because 349903484789 - 2⁴ = 349903484773 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (349903484783) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 974774 + ... + 1284519.

It is an arithmetic number, because the mean of its divisors is an integer number (87476474739).

Almost surely, 2^349903484789 is an apocalyptic number.

It is an amenable number.

349903484789 is a deficient number, since it is larger than the sum of its proper divisors (2414167).

349903484789 is a wasteful number, since it uses less digits than its factorization.

349903484789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2414166.

The product of its (nonzero) digits is 188116992, while the sum is 68.

The spelling of 349903484789 in words is "three hundred forty-nine billion, nine hundred three million, four hundred eighty-four thousand, seven hundred eighty-nine".