801243389 has 2 divisors, whose sum is σ = 801243390. Its totient is φ = 801243388.

The previous prime is 801243383. The next prime is 801243427. The reversal of 801243389 is 983342108.

801243389 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an a-pointer prime, because the next prime (801243427) can be obtained adding 801243389 to its sum of digits (38).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 799023289 + 2220100 = 28267^2 + 1490^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-801243389 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (801243383) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 400621694 + 400621695.

It is an arithmetic number, because the mean of its divisors is an integer number (400621695).

Almost surely, 2^801243389 is an apocalyptic number.

It is an amenable number.

801243389 is a deficient number, since it is larger than the sum of its proper divisors (1).

801243389 is an equidigital number, since it uses as much as digits as its factorization.

801243389 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 41472, while the sum is 38.

The square root of 801243389 is about 28306.2429333177. The cubic root of 801243389 is about 928.7984594800.

The spelling of 801243389 in words is "eight hundred one million, two hundred forty-three thousand, three hundred eighty-nine".