858478963 has 4 divisors (see below), whose sum is σ = 870570288. Its totient is φ = 846387640.

The previous prime is 858478927. The next prime is 858478991. The reversal of 858478963 is 369874858.

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 858478963 - 2²⁵ = 824924531 is a prime.

It is a super-2 number, since 2×858478963² = 1473972259827110738, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 858478898 and 858478907.

It is not an unprimeable number, because it can be changed into a prime (858478913) by changing a digit.

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, 6045556 + ... + 6045697.

It is an arithmetic number, because the mean of its divisors is an integer number (217642572).

Almost surely, 2^858478963 is an apocalyptic number.

858478963 is a deficient number, since it is larger than the sum of its proper divisors (12091325).

858478963 is a wasteful number, since it uses less digits than its factorization.

858478963 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12091324.

The product of its digits is 11612160, while the sum is 58.

The square root of 858478963 is about 29299.8116546847. The cubic root of 858478963 is about 950.4075676878.

The spelling of 858478963 in words is "eight hundred fifty-eight million, four hundred seventy-eight thousand, nine hundred sixty-three".