459869869891 has 16 divisors (see below), whose sum is σ = 477392686848. Its totient is φ = 442662746400.

The previous prime is 459869869873. The next prime is 459869869903. The reversal of 459869869891 is 198968968954.

It is a cyclic number.

It is not a de Polignac number, because 459869869891 - 2¹¹ = 459869867843 is a prime.

It is a super-2 number, since 2×459869869891² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (459869869831) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7531876 + ... + 7592686.

It is an arithmetic number, because the mean of its divisors is an integer number (29837042928).

Almost surely, 2^459869869891 is an apocalyptic number.

459869869891 is a deficient number, since it is larger than the sum of its proper divisors (17522816957).

459869869891 is a wasteful number, since it uses less digits than its factorization.

459869869891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63402.

The product of its digits is 2418647040, while the sum is 82.

The spelling of 459869869891 in words is "four hundred fifty-nine billion, eight hundred sixty-nine million, eight hundred sixty-nine thousand, eight hundred ninety-one".