4947949 has 2 divisors, whose sum is σ = 4947950. Its totient is φ = 4947948.

The previous prime is 4947871. The next prime is 4947959. The reversal of 4947949 is 9497494.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3276100 + 1671849 = 1810^2 + 1293^2 .

It is a cyclic number.

It is not a de Polignac number, because 4947949 - 2⁷ = 4947821 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 4947899 and 4947908.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4947959) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2473974 + 2473975.

It is an arithmetic number, because the mean of its divisors is an integer number (2473975).

Almost surely, 2^4947949 is an apocalyptic number.

It is an amenable number.

4947949 is a deficient number, since it is larger than the sum of its proper divisors (1).

4947949 is an equidigital number, since it uses as much as digits as its factorization.

4947949 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 326592, while the sum is 46.

The square root of 4947949 is about 2224.3985704005. The cubic root of 4947949 is about 170.4021505786.

The spelling of 4947949 in words is "four million, nine hundred forty-seven thousand, nine hundred forty-nine".