409443012 has 60 divisors (see below), whose sum is σ = 1167680976. Its totient is φ = 124072560.

The previous prime is 409442981. The next prime is 409443031. The reversal of 409443012 is 210344904.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 53878 + ... + 61005.

Almost surely, 2^409443012 is an apocalyptic number.

It is an amenable number.

409443012 is an abundant number, since it is smaller than the sum of its proper divisors (758237964).

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

409443012 is a wasteful number, since it uses less digits than its factorization.

409443012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114910 (or 114899 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 409443012 is about 20234.6982186540. The cubic root of 409443012 is about 742.5593218597.

Adding to 409443012 its reverse (210344904), we get a palindrome (619787916).

It can be divided in two parts, 40944 and 3012, that added together give a triangular number (43956 = T₂₉₆).

The spelling of 409443012 in words is "four hundred nine million, four hundred forty-three thousand, twelve".