864608403 has 4 divisors (see below), whose sum is σ = 1152811208. Its totient is φ = 576405600.

The previous prime is 864608399. The next prime is 864608419. The reversal of 864608403 is 304806468.

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

It is not a de Polignac number, because 864608403 - 2² = 864608399 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (864608443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 144101398 + ... + 144101403.

It is an arithmetic number, because the mean of its divisors is an integer number (288202802).

Almost surely, 2^864608403 is an apocalyptic number.

864608403 is a deficient number, since it is larger than the sum of its proper divisors (288202805).

864608403 is a wasteful number, since it uses less digits than its factorization.

864608403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 288202804.

The product of its (nonzero) digits is 110592, while the sum is 39.

The square root of 864608403 is about 29404.2242373439. The cubic root of 864608403 is about 952.6641388105.

The spelling of 864608403 in words is "eight hundred sixty-four million, six hundred eight thousand, four hundred three".