408422868 has 96 divisors (see below), whose sum is σ = 1143797760. Its totient is φ = 110901120.

The previous prime is 408422851. The next prime is 408422873. The reversal of 408422868 is 868224804.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 345238 + ... + 346418.

It is an arithmetic number, because the mean of its divisors is an integer number (11914560).

Almost surely, 2^408422868 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 408422868, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (571898880).

408422868 is an abundant number, since it is smaller than the sum of its proper divisors (735374892).

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

408422868 is a wasteful number, since it uses less digits than its factorization.

408422868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1397 (or 1395 counting only the distinct ones).

The product of its (nonzero) digits is 196608, while the sum is 42.

The square root of 408422868 is about 20209.4747086608. The cubic root of 408422868 is about 741.9421033332.

The spelling of 408422868 in words is "four hundred eight million, four hundred twenty-two thousand, eight hundred sixty-eight".