403868688 has 40 divisors (see below), whose sum is σ = 1061018400. Its totient is φ = 132340224.

The previous prime is 403868687. The next prime is 403868701. The reversal of 403868688 is 886868304.

It is a self number, because there is not a number n which added to its sum of digits gives 403868688.

It is not an unprimeable number, because it can be changed into a prime (403868681) 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, 68473 + ... + 74136.

It is an arithmetic number, because the mean of its divisors is an integer number (26525460).

Almost surely, 2^403868688 is an apocalyptic number.

403868688 is a gapful number since it is divisible by the number (48) formed by its first and last digit.

It is an amenable number.

403868688 is an abundant number, since it is smaller than the sum of its proper divisors (657149712).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

403868688 is a wasteful number, since it uses less digits than its factorization.

403868688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142679 (or 142673 counting only the distinct ones).

The product of its (nonzero) digits is 1769472, while the sum is 51.

The square root of 403868688 is about 20096.4844686826. The cubic root of 403868688 is about 739.1740773035.

The spelling of 403868688 in words is "four hundred three million, eight hundred sixty-eight thousand, six hundred eighty-eight".