349451863469 has 4 divisors (see below), whose sum is σ = 351595740096. Its totient is φ = 347307986844.

The previous prime is 349451863451. The next prime is 349451863513. The reversal of 349451863469 is 964368154943.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 964368154943 = 3673 ⋅262555991.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-349451863469 is a prime.

It is a super-2 number, since 2×349451863469² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (349451869469) 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, 1071938069 + ... + 1071938394.

It is an arithmetic number, because the mean of its divisors is an integer number (87898935024).

Almost surely, 2^349451863469 is an apocalyptic number.

It is an amenable number.

349451863469 is a deficient number, since it is larger than the sum of its proper divisors (2143876627).

349451863469 is a wasteful number, since it uses less digits than its factorization.

349451863469 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2143876626.

The product of its digits is 67184640, while the sum is 62.

The spelling of 349451863469 in words is "three hundred forty-nine billion, four hundred fifty-one million, eight hundred sixty-three thousand, four hundred sixty-nine".