409161796 has 12 divisors (see below), whose sum is σ = 733497660. Its totient is φ = 199591040.

The previous prime is 409161793. The next prime is 409161803. The reversal of 409161796 is 697161904.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 135722500 + 273439296 = 11650^2 + 16536^2 .

It is not an unprimeable number, because it can be changed into a prime (409161793) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1247281 + ... + 1247608.

It is an arithmetic number, because the mean of its divisors is an integer number (61124805).

Almost surely, 2^409161796 is an apocalyptic number.

It is an amenable number.

409161796 is a deficient number, since it is larger than the sum of its proper divisors (324335864).

409161796 is a wasteful number, since it uses less digits than its factorization.

409161796 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2494934 (or 2494932 counting only the distinct ones).

The product of its (nonzero) digits is 81648, while the sum is 43.

The square root of 409161796 is about 20227.7481692847. The cubic root of 409161796 is about 742.3892799719.

The spelling of 409161796 in words is "four hundred nine million, one hundred sixty-one thousand, seven hundred ninety-six".