349389495867 has 54 divisors (see below), whose sum is σ = 488692329748. Its totient is φ = 222036500608.

The previous prime is 349389495863. The next prime is 349389495877. The reversal of 349389495867 is 768594983943.

It is not a de Polignac number, because 349389495867 - 2² = 349389495863 is a prime.

It is a Duffinian number.

Its product of digits (1410877440) is a multiple of the sum of its prime divisors (240).

It is not an unprimeable number, because it can be changed into a prime (349389495863) by changing a digit.

It is a polite number, since it can be written in 53 ways as a sum of consecutive naturals, for example, 2550288223 + ... + 2550288359.

Almost surely, 2^349389495867 is an apocalyptic number.

349389495867 is a deficient number, since it is larger than the sum of its proper divisors (139302833881).

349389495867 is an frugal number, since it uses more digits than its factorization.

349389495867 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 477 (or 240 counting only the distinct ones).

The product of its digits is 1410877440, while the sum is 75.

Multiplying 349389495867 by its sum of digits (75), we get a square (26204212190025 = 5119005²).

The spelling of 349389495867 in words is "three hundred forty-nine billion, three hundred eighty-nine million, four hundred ninety-five thousand, eight hundred sixty-seven".