404440492 has 24 divisors (see below), whose sum is σ = 724922352. Its totient is φ = 197371200.

The previous prime is 404440481. The next prime is 404440501. The reversal of 404440492 is 294044404.

It is a super-2 number, since 2×404440492² = 327144223138404128, which contains 22 as substring.

It is a hoax number, since the sum of its digits (31) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 25638 + ... + 38290.

It is an arithmetic number, because the mean of its divisors is an integer number (30205098).

Almost surely, 2^404440492 is an apocalyptic number.

It is an amenable number.

404440492 is a deficient number, since it is larger than the sum of its proper divisors (320481860).

404440492 is a wasteful number, since it uses less digits than its factorization.

404440492 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12849 (or 12847 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 31.

The square root of 404440492 is about 20110.7059050646. The cubic root of 404440492 is about 739.5227577801.

Adding to 404440492 its reverse (294044404), we get a palindrome (698484896).

It can be divided in two parts, 404 and 440492, that added together give a square (440896 = 664²).

The spelling of 404440492 in words is "four hundred four million, four hundred forty thousand, four hundred ninety-two".