799898389 has 2 divisors, whose sum is σ = 799898390. Its totient is φ = 799898388.

The previous prime is 799898371. The next prime is 799898431. The reversal of 799898389 is 983898997.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 794281489 + 5616900 = 28183^2 + 2370^2 .

It is a cyclic number.

It is not a de Polignac number, because 799898389 - 2⁵ = 799898357 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (799898089) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 399949194 + 399949195.

It is an arithmetic number, because the mean of its divisors is an integer number (399949195).

Almost surely, 2^799898389 is an apocalyptic number.

It is an amenable number.

799898389 is a deficient number, since it is larger than the sum of its proper divisors (1).

799898389 is an equidigital number, since it uses as much as digits as its factorization.

799898389 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 70543872, while the sum is 70.

The square root of 799898389 is about 28282.4749447427. The cubic root of 799898389 is about 928.2784620182.

The spelling of 799898389 in words is "seven hundred ninety-nine million, eight hundred ninety-eight thousand, three hundred eighty-nine".