409012161 has 16 divisors (see below), whose sum is σ = 551326464. Its totient is φ = 269702784.

The previous prime is 409012157. The next prime is 409012193. The reversal of 409012161 is 161210904.

It is not a de Polignac number, because 409012161 - 2² = 409012157 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (409012111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 107880 + ... + 111606.

It is an arithmetic number, because the mean of its divisors is an integer number (34457904).

Almost surely, 2^409012161 is an apocalyptic number.

It is an amenable number.

409012161 is a deficient number, since it is larger than the sum of its proper divisors (142314303).

409012161 is a wasteful number, since it uses less digits than its factorization.

409012161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4120.

The product of its (nonzero) digits is 432, while the sum is 24.

The square root of 409012161 is about 20224.0490752965. The cubic root of 409012161 is about 742.2987689437.

The spelling of 409012161 in words is "four hundred nine million, twelve thousand, one hundred sixty-one".