8231749 has 2 divisors, whose sum is σ = 8231750. Its totient is φ = 8231748.

The previous prime is 8231747. The next prime is 8231753. The reversal of 8231749 is 9471328.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4809249 + 3422500 = 2193^2 + 1850^2 .

It is a cyclic number.

It is not a de Polignac number, because 8231749 - 2¹ = 8231747 is a prime.

Together with 8231747, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8231747) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4115874 + 4115875.

It is an arithmetic number, because the mean of its divisors is an integer number (4115875).

Almost surely, 2^8231749 is an apocalyptic number.

It is an amenable number.

8231749 is a deficient number, since it is larger than the sum of its proper divisors (1).

8231749 is an equidigital number, since it uses as much as digits as its factorization.

8231749 is an evil number, because the sum of its binary digits is even.

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

The square root of 8231749 is about 2869.1024728998. The cubic root of 8231749 is about 201.9128876417.

The spelling of 8231749 in words is "eight million, two hundred thirty-one thousand, seven hundred forty-nine".