863525389 has 2 divisors, whose sum is σ = 863525390. Its totient is φ = 863525388.

The previous prime is 863525347. The next prime is 863525447. The reversal of 863525389 is 983525368.

863525389 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 665898025 + 197627364 = 25805^2 + 14058^2 .

It is a cyclic number.

It is not a de Polignac number, because 863525389 - 2¹³ = 863517197 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (863525329) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 431762694 + 431762695.

It is an arithmetic number, because the mean of its divisors is an integer number (431762695).

Almost surely, 2^863525389 is an apocalyptic number.

It is an amenable number.

863525389 is a deficient number, since it is larger than the sum of its proper divisors (1).

863525389 is an equidigital number, since it uses as much as digits as its factorization.

863525389 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1555200, while the sum is 49.

The square root of 863525389 is about 29385.8025073334. The cubic root of 863525389 is about 952.2662015525.

The spelling of 863525389 in words is "eight hundred sixty-three million, five hundred twenty-five thousand, three hundred eighty-nine".