464171891 has 4 divisors (see below), whose sum is σ = 464412000. Its totient is φ = 463931784.

The previous prime is 464171867. The next prime is 464171899. The reversal of 464171891 is 198171464.

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

It is a cyclic number.

It is not a de Polignac number, because 464171891 - 2²² = 459977587 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (464171899) 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, 117131 + ... + 121028.

It is an arithmetic number, because the mean of its divisors is an integer number (116103000).

Almost surely, 2^464171891 is an apocalyptic number.

464171891 is a deficient number, since it is larger than the sum of its proper divisors (240109).

464171891 is a wasteful number, since it uses less digits than its factorization.

464171891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 240108.

The product of its digits is 48384, while the sum is 41.

The square root of 464171891 is about 21544.6487787571. The cubic root of 464171891 is about 774.2709152966.

The spelling of 464171891 in words is "four hundred sixty-four million, one hundred seventy-one thousand, eight hundred ninety-one".