403960863 has 4 divisors (see below), whose sum is σ = 538614488. Its totient is φ = 269307240.

The previous prime is 403960861. The next prime is 403960871. The reversal of 403960863 is 368069304.

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

It is not a de Polignac number, because 403960863 - 2¹ = 403960861 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (403960861) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 67326808 + ... + 67326813.

It is an arithmetic number, because the mean of its divisors is an integer number (134653622).

Almost surely, 2^403960863 is an apocalyptic number.

403960863 is a deficient number, since it is larger than the sum of its proper divisors (134653625).

403960863 is a wasteful number, since it uses less digits than its factorization.

403960863 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134653624.

The product of its (nonzero) digits is 93312, while the sum is 39.

The square root of 403960863 is about 20098.7776493995. Note that the first 3 decimals coincide. The cubic root of 403960863 is about 739.2303069559.

The spelling of 403960863 in words is "four hundred three million, nine hundred sixty thousand, eight hundred sixty-three".