872994481 has 2 divisors, whose sum is σ = 872994482. Its totient is φ = 872994480.

The previous prime is 872994469. The next prime is 872994491. The reversal of 872994481 is 184499278.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 728514081 + 144480400 = 26991^2 + 12020^2 .

It is a cyclic number.

It is not a de Polignac number, because 872994481 - 2⁵ = 872994449 is a prime.

It is a super-2 number, since 2×872994481² = 1524238727712918722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (872994401) 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, 436497240 + 436497241.

It is an arithmetic number, because the mean of its divisors is an integer number (436497241).

Almost surely, 2^872994481 is an apocalyptic number.

It is an amenable number.

872994481 is a deficient number, since it is larger than the sum of its proper divisors (1).

872994481 is an equidigital number, since it uses as much as digits as its factorization.

872994481 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1161216, while the sum is 52.

The square root of 872994481 is about 29546.4800103159. The cubic root of 872994481 is about 955.7342857437.

The spelling of 872994481 in words is "eight hundred seventy-two million, nine hundred ninety-four thousand, four hundred eighty-one".