4661491 has 2 divisors, whose sum is σ = 4661492. Its totient is φ = 4661490.

The previous prime is 4661477. The next prime is 4661497. The reversal of 4661491 is 1941664.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 4661491 - 2¹¹ = 4659443 is a prime.

It is not a weakly prime, because it can be changed into another prime (4661497) 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, 2330745 + 2330746.

It is an arithmetic number, because the mean of its divisors is an integer number (2330746).

Almost surely, 2^4661491 is an apocalyptic number.

4661491 is a deficient number, since it is larger than the sum of its proper divisors (1).

4661491 is an equidigital number, since it uses as much as digits as its factorization.

4661491 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5184, while the sum is 31.

The square root of 4661491 is about 2159.0486330789. The cubic root of 4661491 is about 167.0481293623.

The spelling of 4661491 in words is "four million, six hundred sixty-one thousand, four hundred ninety-one".