400228886 has 4 divisors (see below), whose sum is σ = 600343332. Its totient is φ = 200114442.

The previous prime is 400228867. The next prime is 400228891. The reversal of 400228886 is 688822004.

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

It is a super-2 number, since 2×400228886² = 320366322377601992, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100057220 + ... + 100057223.

It is an arithmetic number, because the mean of its divisors is an integer number (150085833).

Almost surely, 2^400228886 is an apocalyptic number.

400228886 is a deficient number, since it is larger than the sum of its proper divisors (200114446).

400228886 is a wasteful number, since it uses less digits than its factorization.

400228886 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 200114445.

The product of its (nonzero) digits is 49152, while the sum is 38.

The square root of 400228886 is about 20005.7213316591. The cubic root of 400228886 is about 736.9468101364.

The spelling of 400228886 in words is "four hundred million, two hundred twenty-eight thousand, eight hundred eighty-six".