409278116 has 36 divisors (see below), whose sum is σ = 779836932. Its totient is φ = 187858944.

The previous prime is 409278109. The next prime is 409278157. The reversal of 409278116 is 611872904.

It can be written as a sum of positive squares in 6 ways, for example, as 9278116 + 400000000 = 3046^2 + 20000^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 409278116.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 128900 + ... + 132036.

It is an arithmetic number, because the mean of its divisors is an integer number (21662137).

Almost surely, 2^409278116 is an apocalyptic number.

It is an amenable number.

409278116 is a deficient number, since it is larger than the sum of its proper divisors (370558816).

409278116 is a wasteful number, since it uses less digits than its factorization.

409278116 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3360 (or 3345 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 38.

The square root of 409278116 is about 20230.6232232228. The cubic root of 409278116 is about 742.4596242220.

The spelling of 409278116 in words is "four hundred nine million, two hundred seventy-eight thousand, one hundred sixteen".