943872491 has 2 divisors, whose sum is σ = 943872492. Its totient is φ = 943872490.

The previous prime is 943872473. The next prime is 943872493. The reversal of 943872491 is 194278349.

943872491 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-943872491 is a prime.

It is a Sophie Germain prime.

Together with 943872493, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (943872493) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 471936245 + 471936246.

It is an arithmetic number, because the mean of its divisors is an integer number (471936246).

Almost surely, 2^943872491 is an apocalyptic number.

943872491 is a deficient number, since it is larger than the sum of its proper divisors (1).

943872491 is an equidigital number, since it uses as much as digits as its factorization.

943872491 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 435456, while the sum is 47.

The square root of 943872491 is about 30722.5078891682. The cubic root of 943872491 is about 980.9294566020.

The spelling of 943872491 in words is "nine hundred forty-three million, eight hundred seventy-two thousand, four hundred ninety-one".