409980447 has 20 divisors (see below), whose sum is σ = 626688040. Its totient is φ = 266961744.

The previous prime is 409980433. The next prime is 409980457. The reversal of 409980447 is 744089904.

409980447 is a `hidden beast` number, since 40 + 99 + 80 + 447 = 666.

It is not a de Polignac number, because 409980447 - 2¹¹ = 409978399 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (409980427) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 55372 + ... + 62337.

It is an arithmetic number, because the mean of its divisors is an integer number (31334402).

Almost surely, 2^409980447 is an apocalyptic number.

409980447 is a deficient number, since it is larger than the sum of its proper divisors (216707593).

409980447 is a wasteful number, since it uses less digits than its factorization.

409980447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117764 (or 117755 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 45.

The square root of 409980447 is about 20247.9738986398. The cubic root of 409980447 is about 742.8840743283.

The spelling of 409980447 in words is "four hundred nine million, nine hundred eighty thousand, four hundred forty-seven".