4999121 has 2 divisors, whose sum is σ = 4999122. Its totient is φ = 4999120.

The previous prime is 4999117. The next prime is 4999151. The reversal of 4999121 is 1219994.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4558225 + 440896 = 2135^2 + 664^2 .

It is a cyclic number.

It is not a de Polignac number, because 4999121 - 2² = 4999117 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (4999151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2499560 + 2499561.

It is an arithmetic number, because the mean of its divisors is an integer number (2499561).

Almost surely, 2^4999121 is an apocalyptic number.

It is an amenable number.

4999121 is a deficient number, since it is larger than the sum of its proper divisors (1).

4999121 is an equidigital number, since it uses as much as digits as its factorization.

4999121 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5832, while the sum is 35.

The square root of 4999121 is about 2235.8714184854. The cubic root of 4999121 is about 170.9875736214.

The spelling of 4999121 in words is "four million, nine hundred ninety-nine thousand, one hundred twenty-one".