873956491 has 2 divisors, whose sum is σ = 873956492. Its totient is φ = 873956490.

The previous prime is 873956477. The next prime is 873956497. The reversal of 873956491 is 194659378.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 873956491 - 2¹⁵ = 873923723 is a prime.

It is a super-2 number, since 2×873956491² = 1527599896322066162, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (873956497) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 436978245 + 436978246.

It is an arithmetic number, because the mean of its divisors is an integer number (436978246).

Almost surely, 2^873956491 is an apocalyptic number.

873956491 is a deficient number, since it is larger than the sum of its proper divisors (1).

873956491 is an equidigital number, since it uses as much as digits as its factorization.

873956491 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1632960, while the sum is 52.

The square root of 873956491 is about 29562.7551320915. The cubic root of 873956491 is about 956.0852190128.

The spelling of 873956491 in words is "eight hundred seventy-three million, nine hundred fifty-six thousand, four hundred ninety-one".