408869100 has 72 divisors (see below), whose sum is σ = 1314447120. Its totient is φ = 109031040.

The previous prime is 408869093. The next prime is 408869101. The reversal of 408869100 is 1968804.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (408869101) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 73017 + ... + 78416.

It is an arithmetic number, because the mean of its divisors is an integer number (18256210).

Almost surely, 2^408869100 is an apocalyptic number.

It is an amenable number.

408869100 is an abundant number, since it is smaller than the sum of its proper divisors (905578020).

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

408869100 is a wasteful number, since it uses less digits than its factorization.

408869100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151456 (or 151443 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 36.

The square root of 408869100 is about 20220.5118629574. The cubic root of 408869100 is about 742.2122137440.

The spelling of 408869100 in words is "four hundred eight million, eight hundred sixty-nine thousand, one hundred".