400040447 has 12 divisors (see below), whose sum is σ = 425870400. Its totient is φ = 375699456.

The previous prime is 400040441. The next prime is 400040503. The reversal of 400040447 is 744040004.

It is not a de Polignac number, because 400040447 - 2⁸ = 400040191 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400040441) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 165554 + ... + 167952.

It is an arithmetic number, because the mean of its divisors is an integer number (35489200).

Almost surely, 2^400040447 is an apocalyptic number.

400040447 is a deficient number, since it is larger than the sum of its proper divisors (25829953).

400040447 is a wasteful number, since it uses less digits than its factorization.

400040447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3010 (or 2993 counting only the distinct ones).

The product of its (nonzero) digits is 1792, while the sum is 23.

The square root of 400040447 is about 20001.0111494394. The cubic root of 400040447 is about 736.8311335614.

The spelling of 400040447 in words is "four hundred million, forty thousand, four hundred forty-seven".