409408244 has 24 divisors (see below), whose sum is σ = 823350528. Its totient is φ = 174489120.

The previous prime is 409408243. The next prime is 409408253. The reversal of 409408244 is 442804904.

It is a super-2 number, since 2×409408244² = 335230220510327072, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (409408243) 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, 35324 + ... + 45459.

It is an arithmetic number, because the mean of its divisors is an integer number (34306272).

Almost surely, 2^409408244 is an apocalyptic number.

It is an amenable number.

409408244 is an abundant number, since it is smaller than the sum of its proper divisors (413942284).

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

409408244 is a wasteful number, since it uses less digits than its factorization.

409408244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80975 (or 80973 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 35.

The square root of 409408244 is about 20233.8390820922. The cubic root of 409408244 is about 742.5383030345.

The spelling of 409408244 in words is "four hundred nine million, four hundred eight thousand, two hundred forty-four".