4831991 has 2 divisors, whose sum is σ = 4831992. Its totient is φ = 4831990.

The previous prime is 4831987. The next prime is 4831999. The reversal of 4831991 is 1991384.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 4831991 - 2² = 4831987 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4831999) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2415995 + 2415996.

It is an arithmetic number, because the mean of its divisors is an integer number (2415996).

Almost surely, 2^4831991 is an apocalyptic number.

4831991 is a deficient number, since it is larger than the sum of its proper divisors (1).

4831991 is an equidigital number, since it uses as much as digits as its factorization.

4831991 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7776, while the sum is 35.

The square root of 4831991 is about 2198.1790190974. The cubic root of 4831991 is about 169.0604571112.

The spelling of 4831991 in words is "four million, eight hundred thirty-one thousand, nine hundred ninety-one".