863434920 has 32 divisors (see below), whose sum is σ = 2590305120. Its totient is φ = 230249280.

The previous prime is 863434907. The next prime is 863434939. The reversal of 863434920 is 29434368.

It is a super-2 number, since 2×863434920² = 1491039722150812800, which contains 22 as substring.

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 7 ways as a sum of consecutive naturals, for example, 3597526 + ... + 3597765.

It is an arithmetic number, because the mean of its divisors is an integer number (80947035).

Almost surely, 2^863434920 is an apocalyptic number.

It is an amenable number.

863434920 is an abundant number, since it is smaller than the sum of its proper divisors (1726870200).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

863434920 is a wasteful number, since it uses less digits than its factorization.

863434920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7195305 (or 7195301 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 39.

The square root of 863434920 is about 29384.2631352226. The cubic root of 863434920 is about 952.2329450203.

The spelling of 863434920 in words is "eight hundred sixty-three million, four hundred thirty-four thousand, nine hundred twenty".