804147389 has 2 divisors, whose sum is σ = 804147390. Its totient is φ = 804147388.

The previous prime is 804147371. The next prime is 804147397. The reversal of 804147389 is 983741408.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 438190489 + 365956900 = 20933^2 + 19130^2 .

It is a cyclic number.

It is not a de Polignac number, because 804147389 - 2¹² = 804143293 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (804147359) 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, 402073694 + 402073695.

It is an arithmetic number, because the mean of its divisors is an integer number (402073695).

Almost surely, 2^804147389 is an apocalyptic number.

It is an amenable number.

804147389 is a deficient number, since it is larger than the sum of its proper divisors (1).

804147389 is an equidigital number, since it uses as much as digits as its factorization.

804147389 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 193536, while the sum is 44.

The square root of 804147389 is about 28357.4926430388. The cubic root of 804147389 is about 929.9192086906.

The spelling of 804147389 in words is "eight hundred four million, one hundred forty-seven thousand, three hundred eighty-nine".