4911961 has 2 divisors, whose sum is σ = 4911962. Its totient is φ = 4911960.

The previous prime is 4911943. The next prime is 4912007. The reversal of 4911961 is 1691194.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3822025 + 1089936 = 1955^2 + 1044^2 .

It is a cyclic number.

It is not a de Polignac number, because 4911961 - 2¹⁹ = 4387673 is a prime.

It is not a weakly prime, because it can be changed into another prime (4911901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2455980 + 2455981.

It is an arithmetic number, because the mean of its divisors is an integer number (2455981).

Almost surely, 2^4911961 is an apocalyptic number.

It is an amenable number.

4911961 is a deficient number, since it is larger than the sum of its proper divisors (1).

4911961 is an equidigital number, since it uses as much as digits as its factorization.

4911961 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1944, while the sum is 31.

The square root of 4911961 is about 2216.2944298987. The cubic root of 4911961 is about 169.9880153028.

The spelling of 4911961 in words is "four million, nine hundred eleven thousand, nine hundred sixty-one".