863469138 has 32 divisors (see below), whose sum is σ = 1975163904. Its totient is φ = 246515472.

The previous prime is 863469137. The next prime is 863469149. The reversal of 863469138 is 831964368.

It is not an unprimeable number, because it can be changed into a prime (863469137) 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 in 15 ways as a sum of consecutive naturals, for example, 52731 + ... + 67137.

It is an arithmetic number, because the mean of its divisors is an integer number (61723872).

Almost surely, 2^863469138 is an apocalyptic number.

863469138 is an abundant number, since it is smaller than the sum of its proper divisors (1111694766).

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

863469138 is a wasteful number, since it uses less digits than its factorization.

863469138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15846.

The product of its digits is 746496, while the sum is 48.

The square root of 863469138 is about 29384.8453798893. The cubic root of 863469138 is about 952.2455238786.

The spelling of 863469138 in words is "eight hundred sixty-three million, four hundred sixty-nine thousand, one hundred thirty-eight".