400206894 has 32 divisors (see below), whose sum is σ = 849885696. Its totient is φ = 125201280.

The previous prime is 400206893. The next prime is 400206953. The reversal of 400206894 is 498602004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400206893) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32089 + ... + 42779.

It is an arithmetic number, because the mean of its divisors is an integer number (26558928).

Almost surely, 2^400206894 is an apocalyptic number.

400206894 is an abundant number, since it is smaller than the sum of its proper divisors (449678802).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

400206894 is a wasteful number, since it uses less digits than its factorization.

400206894 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11080.

The product of its (nonzero) digits is 13824, while the sum is 33.

The square root of 400206894 is about 20005.1716813428. The cubic root of 400206894 is about 736.9333118344.

Adding to 400206894 its reverse (498602004), we get a palindrome (898808898).

The spelling of 400206894 in words is "four hundred million, two hundred six thousand, eight hundred ninety-four".