403966887 has 8 divisors (see below), whose sum is σ = 539090304. Its totient is φ = 269077368.

The previous prime is 403966861. The next prime is 403966907. The reversal of 403966887 is 788669304.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 403966887 - 2¹¹ = 403964839 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (403966187) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 54403 + ... + 61380.

It is an arithmetic number, because the mean of its divisors is an integer number (67386288).

Almost surely, 2^403966887 is an apocalyptic number.

403966887 is a deficient number, since it is larger than the sum of its proper divisors (135123417).

403966887 is a wasteful number, since it uses less digits than its factorization.

403966887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116949.

The product of its (nonzero) digits is 1741824, while the sum is 51.

The square root of 403966887 is about 20098.9275087006. The cubic root of 403966887 is about 739.2339814878.

The spelling of 403966887 in words is "four hundred three million, nine hundred sixty-six thousand, eight hundred eighty-seven".