4920991 has 2 divisors, whose sum is σ = 4920992. Its totient is φ = 4920990.

The previous prime is 4920983. The next prime is 4921009. The reversal of 4920991 is 1990294.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 4920991 - 2³ = 4920983 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4920901) 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, 2460495 + 2460496.

It is an arithmetic number, because the mean of its divisors is an integer number (2460496).

Almost surely, 2^4920991 is an apocalyptic number.

4920991 is a deficient number, since it is larger than the sum of its proper divisors (1).

4920991 is an equidigital number, since it uses as much as digits as its factorization.

4920991 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5832, while the sum is 34.

The square root of 4920991 is about 2218.3306786861. The cubic root of 4920991 is about 170.0921184712.

The spelling of 4920991 in words is "four million, nine hundred twenty thousand, nine hundred ninety-one".