491083469 has 2 divisors, whose sum is σ = 491083470. Its totient is φ = 491083468.

The previous prime is 491083459. The next prime is 491083543. The reversal of 491083469 is 964380194.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 391842025 + 99241444 = 19795^2 + 9962^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-491083469 is a prime.

It is a super-2 number, since 2×491083469² = 482325947050147922, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (491083459) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 245541734 + 245541735.

It is an arithmetic number, because the mean of its divisors is an integer number (245541735).

Almost surely, 2^491083469 is an apocalyptic number.

It is an amenable number.

491083469 is a deficient number, since it is larger than the sum of its proper divisors (1).

491083469 is an equidigital number, since it uses as much as digits as its factorization.

491083469 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 186624, while the sum is 44.

The square root of 491083469 is about 22160.4031777402. The cubic root of 491083469 is about 788.9541622032.

The spelling of 491083469 in words is "four hundred ninety-one million, eighty-three thousand, four hundred sixty-nine".