400442214 has 16 divisors (see below), whose sum is σ = 843036480. Its totient is φ = 126455400.

The previous prime is 400442197. The next prime is 400442243. The reversal of 400442214 is 412244004.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 1756212 + ... + 1756439.

It is an arithmetic number, because the mean of its divisors is an integer number (52689780).

Almost surely, 2^400442214 is an apocalyptic number.

400442214 is an abundant number, since it is smaller than the sum of its proper divisors (442594266).

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

400442214 is a wasteful number, since it uses less digits than its factorization.

400442214 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3512675.

The product of its (nonzero) digits is 1024, while the sum is 21.

The square root of 400442214 is about 20011.0522961687. The cubic root of 400442214 is about 737.0777214481.

Adding to 400442214 its reverse (412244004), we get a palindrome (812686218).

The spelling of 400442214 in words is "four hundred million, four hundred forty-two thousand, two hundred fourteen".