8491772 has 24 divisors (see below), whose sum is σ = 16075584. Its totient is φ = 3909632.

The previous prime is 8491753. The next prime is 8491801. The reversal of 8491772 is 2771948.

It is a super-2 number, since 2×8491772² = 144220383399968, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1868 + ... + 4524.

It is an arithmetic number, because the mean of its divisors is an integer number (669816).

Almost surely, 2^8491772 is an apocalyptic number.

It is an amenable number.

8491772 is a deficient number, since it is larger than the sum of its proper divisors (7583812).

8491772 is a wasteful number, since it uses less digits than its factorization.

8491772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2725 (or 2723 counting only the distinct ones).

The product of its digits is 28224, while the sum is 38.

The square root of 8491772 is about 2914.0645154149. The cubic root of 8491772 is about 204.0168831343.

The spelling of 8491772 in words is "eight million, four hundred ninety-one thousand, seven hundred seventy-two".