2321749 has 2 divisors, whose sum is σ = 2321750. Its totient is φ = 2321748.

The previous prime is 2321747. The next prime is 2321773. The reversal of 2321749 is 9471232.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1456849 + 864900 = 1207^2 + 930^2 .

It is a cyclic number.

It is not a de Polignac number, because 2321749 - 2¹ = 2321747 is a prime.

Together with 2321747, 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 (2321747) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1160874 + 1160875.

It is an arithmetic number, because the mean of its divisors is an integer number (1160875).

2^2321749 is an apocalyptic number.

It is an amenable number.

2321749 is a deficient number, since it is larger than the sum of its proper divisors (1).

2321749 is an equidigital number, since it uses as much as digits as its factorization.

2321749 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3024, while the sum is 28.

The square root of 2321749 is about 1523.7286503837. The cubic root of 2321749 is about 132.4153773178.

The spelling of 2321749 in words is "two million, three hundred twenty-one thousand, seven hundred forty-nine".