4549939 has 2 divisors, whose sum is σ = 4549940. Its totient is φ = 4549938.

The previous prime is 4549933. The next prime is 4549943. The reversal of 4549939 is 9399454.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4549939 is a prime.

4549939 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 4549895 and 4549904.

It is not a weakly prime, because it can be changed into another prime (4549933) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2274969 + 2274970.

It is an arithmetic number, because the mean of its divisors is an integer number (2274970).

Almost surely, 2^4549939 is an apocalyptic number.

4549939 is a deficient number, since it is larger than the sum of its proper divisors (1).

4549939 is an equidigital number, since it uses as much as digits as its factorization.

4549939 is an evil number, because the sum of its binary digits is even.

The product of its digits is 174960, while the sum is 43.

The square root of 4549939 is about 2133.0586021017. The cubic root of 4549939 is about 165.7048391153.

The spelling of 4549939 in words is "four million, five hundred forty-nine thousand, nine hundred thirty-nine".