409812481 has 16 divisors (see below), whose sum is σ = 456132544. Its totient is φ = 365736384.

The previous prime is 409812479. The next prime is 409812503. The reversal of 409812481 is 184218904.

It is not a de Polignac number, because 409812481 - 2¹ = 409812479 is a prime.

It is a super-2 number, since 2×409812481² = 335892539166750722, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 409812481.

It is not an unprimeable number, because it can be changed into a prime (409812181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 75790 + ... + 81016.

It is an arithmetic number, because the mean of its divisors is an integer number (28508284).

Almost surely, 2^409812481 is an apocalyptic number.

It is an amenable number.

409812481 is a deficient number, since it is larger than the sum of its proper divisors (46320063).

409812481 is a wasteful number, since it uses less digits than its factorization.

409812481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5440.

The product of its (nonzero) digits is 18432, while the sum is 37.

The square root of 409812481 is about 20243.8257500898. The cubic root of 409812481 is about 742.7826090742.

The spelling of 409812481 in words is "four hundred nine million, eight hundred twelve thousand, four hundred eighty-one".