801239513 has 2 divisors, whose sum is σ = 801239514. Its totient is φ = 801239512.

The previous prime is 801239501. The next prime is 801239561. The reversal of 801239513 is 315932108.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 516743824 + 284495689 = 22732^2 + 16867^2 .

It is a cyclic number.

It is not a de Polignac number, because 801239513 - 2⁶ = 801239449 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 801239513.

It is not a weakly prime, because it can be changed into another prime (801239573) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 400619756 + 400619757.

It is an arithmetic number, because the mean of its divisors is an integer number (400619757).

Almost surely, 2^801239513 is an apocalyptic number.

It is an amenable number.

801239513 is a deficient number, since it is larger than the sum of its proper divisors (1).

801239513 is an equidigital number, since it uses as much as digits as its factorization.

801239513 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6480, while the sum is 32.

The square root of 801239513 is about 28306.1744677729. The cubic root of 801239513 is about 928.7969617958.

The spelling of 801239513 in words is "eight hundred one million, two hundred thirty-nine thousand, five hundred thirteen".