400050406 has 12 divisors (see below), whose sum is σ = 698047308. Its totient is φ = 171450132.

The previous prime is 400050403. The next prime is 400050419. The reversal of 400050406 is 604050004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400050403) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2040976 + ... + 2041171.

It is an arithmetic number, because the mean of its divisors is an integer number (58170609).

Almost surely, 2^400050406 is an apocalyptic number.

400050406 is a deficient number, since it is larger than the sum of its proper divisors (297996902).

400050406 is a wasteful number, since it uses less digits than its factorization.

400050406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4082163 (or 4082156 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 400050406 is about 20001.2601103031. The cubic root of 400050406 is about 736.8372479768.

The spelling of 400050406 in words is "four hundred million, fifty thousand, four hundred six".