408863862 has 60 divisors (see below), whose sum is σ = 1001535876. Its totient is φ = 123639480.

The previous prime is 408863797. The next prime is 408863863. The reversal of 408863862 is 268368804.

It is a happy number.

408863862 is a `hidden beast` number, since 4 + 0 + 8 + 8 + 638 + 6 + 2 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (408863863) by changing a digit.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 853339 + ... + 853817.

Almost surely, 2^408863862 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 408863862, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (500767938).

408863862 is an abundant number, since it is smaller than the sum of its proper divisors (592672014).

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

408863862 is an equidigital number, since it uses as much as digits as its factorization.

408863862 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 983 (or 495 counting only the distinct ones).

The product of its (nonzero) digits is 442368, while the sum is 45.

The square root of 408863862 is about 20220.3823405988. The cubic root of 408863862 is about 742.2090442502.

The spelling of 408863862 in words is "four hundred eight million, eight hundred sixty-three thousand, eight hundred sixty-two".