801231589 has 2 divisors, whose sum is σ = 801231590. Its totient is φ = 801231588.

The previous prime is 801231583. The next prime is 801231593. The reversal of 801231589 is 985132108.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 801173025 + 58564 = 28305^2 + 242^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-801231589 is a prime.

It is a super-2 number, since 2×801231589² = 1283944118422929842, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (801231583) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 400615794 + 400615795.

It is an arithmetic number, because the mean of its divisors is an integer number (400615795).

Almost surely, 2^801231589 is an apocalyptic number.

It is an amenable number.

801231589 is a deficient number, since it is larger than the sum of its proper divisors (1).

801231589 is an equidigital number, since it uses as much as digits as its factorization.

801231589 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17280, while the sum is 37.

The square root of 801231589 is about 28306.0344979653. The cubic root of 801231589 is about 928.7938999517.

It can be divided in two parts, 8012 and 31589, that added together give a square (39601 = 199²).

The spelling of 801231589 in words is "eight hundred one million, two hundred thirty-one thousand, five hundred eighty-nine".