4431491 has 2 divisors, whose sum is σ = 4431492. Its totient is φ = 4431490.

The previous prime is 4431487. The next prime is 4431499. The reversal of 4431491 is 1941344.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 4431491 - 2² = 4431487 is a prime.

It is a super-2 number, since 2×4431491² = 39276224966162, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 4431491.

It is not a weakly prime, because it can be changed into another prime (4431499) 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, 2215745 + 2215746.

It is an arithmetic number, because the mean of its divisors is an integer number (2215746).

Almost surely, 2^4431491 is an apocalyptic number.

4431491 is a deficient number, since it is larger than the sum of its proper divisors (1).

4431491 is an equidigital number, since it uses as much as digits as its factorization.

4431491 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1728, while the sum is 26.

The square root of 4431491 is about 2105.1106859260. The cubic root of 4431491 is about 164.2542531527.

The spelling of 4431491 in words is "four million, four hundred thirty-one thousand, four hundred ninety-one".