863487883 has 4 divisors (see below), whose sum is σ = 863699760. Its totient is φ = 863276008.

The previous prime is 863487881. The next prime is 863487887. The reversal of 863487883 is 388784368.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 863487883 - 2¹ = 863487881 is a prime.

It is a super-2 number, since 2×863487883² = 1491222648175643378, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (863487881) 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 3 ways as a sum of consecutive naturals, for example, 99703 + ... + 108016.

It is an arithmetic number, because the mean of its divisors is an integer number (215924940).

Almost surely, 2^863487883 is an apocalyptic number.

863487883 is a deficient number, since it is larger than the sum of its proper divisors (211877).

863487883 is a wasteful number, since it uses less digits than its factorization.

863487883 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 211876.

The product of its digits is 6193152, while the sum is 55.

The square root of 863487883 is about 29385.1643350858. The cubic root of 863487883 is about 952.2524145758.

The spelling of 863487883 in words is "eight hundred sixty-three million, four hundred eighty-seven thousand, eight hundred eighty-three".