8749231 has 4 divisors (see below), whose sum is σ = 8813232. Its totient is φ = 8685232.

The previous prime is 8749229. The next prime is 8749243. The reversal of 8749231 is 1329478.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1329478 = 2 ⋅664739.

It is a cyclic number.

It is not a de Polignac number, because 8749231 - 2¹ = 8749229 is a prime.

It is a super-2 number, since 2×8749231² = 153098086182722, which contains 22 as substring.

It is a Duffinian number.

8749231 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8749331) 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, 31795 + ... + 32068.

It is an arithmetic number, because the mean of its divisors is an integer number (2203308).

Almost surely, 2^8749231 is an apocalyptic number.

8749231 is a deficient number, since it is larger than the sum of its proper divisors (64001).

8749231 is a wasteful number, since it uses less digits than its factorization.

8749231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64000.

The product of its digits is 12096, while the sum is 34.

The square root of 8749231 is about 2957.9099039694. The cubic root of 8749231 is about 206.0582281119.

The spelling of 8749231 in words is "eight million, seven hundred forty-nine thousand, two hundred thirty-one".