404838161 has 16 divisors (see below), whose sum is σ = 499640064. Its totient is φ = 319425984.

The previous prime is 404838143. The next prime is 404838167. The reversal of 404838161 is 161838404.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-404838161 is a prime.

It is not an unprimeable number, because it can be changed into a prime (404838167) 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, 27980 + ... + 39906.

It is an arithmetic number, because the mean of its divisors is an integer number (31227504).

Almost surely, 2^404838161 is an apocalyptic number.

It is an amenable number.

404838161 is a deficient number, since it is larger than the sum of its proper divisors (94801903).

404838161 is a wasteful number, since it uses less digits than its factorization.

404838161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12320.

The product of its (nonzero) digits is 18432, while the sum is 35.

The square root of 404838161 is about 20120.5904734429. The cubic root of 404838161 is about 739.7650587258.

The spelling of 404838161 in words is "four hundred four million, eight hundred thirty-eight thousand, one hundred sixty-one".