461891459 has 4 divisors (see below), whose sum is σ = 465417480. Its totient is φ = 458365440.

The previous prime is 461891407. The next prime is 461891473. The reversal of 461891459 is 954198164.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-461891459 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (461897459) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1762814 + ... + 1763075.

It is an arithmetic number, because the mean of its divisors is an integer number (116354370).

Almost surely, 2^461891459 is an apocalyptic number.

461891459 is a deficient number, since it is larger than the sum of its proper divisors (3526021).

461891459 is a wasteful number, since it uses less digits than its factorization.

461891459 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3526020.

The product of its digits is 311040, while the sum is 47.

The square root of 461891459 is about 21491.6602197224. The cubic root of 461891459 is about 773.0008602083. Note that the first 3 decimals are identical.

The spelling of 461891459 in words is "four hundred sixty-one million, eight hundred ninety-one thousand, four hundred fifty-nine".