404005245 has 24 divisors (see below), whose sum is σ = 751945824. Its totient is φ = 184687776.

The previous prime is 404005241. The next prime is 404005249. The reversal of 404005245 is 542500404.

It is an interprime number because it is at equal distance from previous prime (404005241) and next prime (404005249).

It is not a de Polignac number, because 404005245 - 2² = 404005241 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (404005241) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 274099 + ... + 275568.

It is an arithmetic number, because the mean of its divisors is an integer number (31331076).

Almost surely, 2^404005245 is an apocalyptic number.

It is an amenable number.

404005245 is a deficient number, since it is larger than the sum of its proper divisors (347940579).

404005245 is a wasteful number, since it uses less digits than its factorization.

404005245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 549689 (or 549682 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 24.

The square root of 404005245 is about 20099.8817160699. The cubic root of 404005245 is about 739.2573783227.

Adding to 404005245 its reverse (542500404), we get a palindrome (946505649).

The spelling of 404005245 in words is "four hundred four million, five thousand, two hundred forty-five".