404000407 has 4 divisors (see below), whose sum is σ = 406573816. Its totient is φ = 401427000.

The previous prime is 404000369. The next prime is 404000411. The reversal of 404000407 is 704000404.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-404000407 is a prime.

It is a Duffinian number.

404000407 is a modest number, since divided by 407 gives 404 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (404000417) 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 3 ways as a sum of consecutive naturals, for example, 1286469 + ... + 1286782.

It is an arithmetic number, because the mean of its divisors is an integer number (101643454).

Almost surely, 2^404000407 is an apocalyptic number.

404000407 is a deficient number, since it is larger than the sum of its proper divisors (2573409).

404000407 is a wasteful number, since it uses less digits than its factorization.

404000407 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2573408.

The product of its (nonzero) digits is 448, while the sum is 19.

The square root of 404000407 is about 20099.7613667426. The cubic root of 404000407 is about 739.2544274192.

The spelling of 404000407 in words is "four hundred four million, four hundred seven", and thus it is an aban number.