4539749 has 2 divisors, whose sum is σ = 4539750. Its totient is φ = 4539748.

The previous prime is 4539739. The next prime is 4539751. The reversal of 4539749 is 9479354.

4539749 is an esthetic number in base 16, because in such base its adjacent digits differ by 1.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3422500 + 1117249 = 1850^2 + 1057^2 .

It is a cyclic number.

It is not a de Polignac number, because 4539749 - 2¹² = 4535653 is a prime.

Together with 4539751, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4539739) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2269874 + 2269875.

It is an arithmetic number, because the mean of its divisors is an integer number (2269875).

Almost surely, 2^4539749 is an apocalyptic number.

It is an amenable number.

4539749 is a deficient number, since it is larger than the sum of its proper divisors (1).

4539749 is an equidigital number, since it uses as much as digits as its factorization.

4539749 is an evil number, because the sum of its binary digits is even.

The product of its digits is 136080, while the sum is 41.

The square root of 4539749 is about 2130.6686743837. The cubic root of 4539749 is about 165.5810429925.

The spelling of 4539749 in words is "four million, five hundred thirty-nine thousand, seven hundred forty-nine".