863889452 has 12 divisors (see below), whose sum is σ = 1512093240. Its totient is φ = 431862816.

The previous prime is 863889443. The next prime is 863889529. The reversal of 863889452 is 254988368.

Its product of digits (3317760) is a multiple of the sum of its prime factors (40960).

It is a junction number, because it is equal to n+sod(n) for n = 863889394 and 863889403.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7499 + ... + 42237.

It is an arithmetic number, because the mean of its divisors is an integer number (126007770).

Almost surely, 2^863889452 is an apocalyptic number.

It is an amenable number.

863889452 is a deficient number, since it is larger than the sum of its proper divisors (648203788).

863889452 is a wasteful number, since it uses less digits than its factorization.

863889452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40960 (or 40958 counting only the distinct ones).

The product of its digits is 3317760, while the sum is 53.

The square root of 863889452 is about 29391.9963935763. The cubic root of 863889452 is about 952.4000081494.

The spelling of 863889452 in words is "eight hundred sixty-three million, eight hundred eighty-nine thousand, four hundred fifty-two".