889172761 has 3 divisors (see below), whose sum is σ = 889202581. Its totient is φ = 889142942.

The previous prime is 889172749. The next prime is 889172807. The reversal of 889172761 is 167271988.

The square root of 889172761 is 29819.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 889172761 - 2¹⁷ = 889041689 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (889172701) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 14910 + ... + 44728.

Almost surely, 2^889172761 is an apocalyptic number.

889172761 is the 29819-th square number.

889172761 is the 14910-th centered octagonal number.

It is an amenable number.

889172761 is a deficient number, since it is larger than the sum of its proper divisors (29820).

889172761 is an frugal number, since it uses more digits than its factorization.

889172761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59638 (or 29819 counting only the distinct ones).

The product of its digits is 338688, while the sum is 49.

The cubic root of 889172761 is about 961.6020562520.

Multiplying 889172761 by its sum of digits (49), we get a square (43569465289 = 208733²).

The spelling of 889172761 in words is "eight hundred eighty-nine million, one hundred seventy-two thousand, seven hundred sixty-one".