400220434 has 16 divisors (see below), whose sum is σ = 619831296. Its totient is φ = 193687200.

The previous prime is 400220419. The next prime is 400220459. The reversal of 400220434 is 434022004.

It is a super-2 number, since 2×400220434² = 320352791582296712, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8802 + ... + 29629.

It is an arithmetic number, because the mean of its divisors is an integer number (38739456).

Almost surely, 2^400220434 is an apocalyptic number.

400220434 is a deficient number, since it is larger than the sum of its proper divisors (219610862).

400220434 is a wasteful number, since it uses less digits than its factorization.

400220434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38601.

The product of its (nonzero) digits is 768, while the sum is 19.

The square root of 400220434 is about 20005.5100909724. The cubic root of 400220434 is about 736.9416225062.

Adding to 400220434 its reverse (434022004), we get a palindrome (834242438).

The spelling of 400220434 in words is "four hundred million, two hundred twenty thousand, four hundred thirty-four".