404492 has 24 divisors (see below), whose sum is σ = 801360. Its totient is φ = 176960.

The previous prime is 404489. The next prime is 404497. The reversal of 404492 is 294404.

Added to its reverse (294404) it gives a square (698896 = 836²).

404492 = T₁₁₃ + T₁₁₄ + ... + T₁₅₆.

It is a happy number.

It is a super-2 number, since 2×404492² = 327227556128, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (404497) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1118 + ... + 1434.

It is an arithmetic number, because the mean of its divisors is an integer number (33390).

2⁴⁰⁴⁴⁹² is an apocalyptic number.

It is an amenable number.

404492 is a deficient number, since it is larger than the sum of its proper divisors (396868).

404492 is a wasteful number, since it uses less digits than its factorization.

404492 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 361 (or 359 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 404492 is about 635.9968553381. The cubic root of 404492 is about 73.9554150714.

Adding to 404492 its reverse (294404), we get a palindrome (698896).

The spelling of 404492 in words is "four hundred four thousand, four hundred ninety-two".