400220662 has 4 divisors (see below), whose sum is σ = 600330996. Its totient is φ = 200110330.

The previous prime is 400220657. The next prime is 400220663. The reversal of 400220662 is 266022004.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400220663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100055164 + ... + 100055167.

It is an arithmetic number, because the mean of its divisors is an integer number (150082749).

Almost surely, 2^400220662 is an apocalyptic number.

400220662 is a deficient number, since it is larger than the sum of its proper divisors (200110334).

400220662 is a wasteful number, since it uses less digits than its factorization.

400220662 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 200110333.

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 400220662 is about 20005.5157894017. The cubic root of 400220662 is about 736.9417624480.

Adding to 400220662 its reverse (266022004), we get a palindrome (666242666).

The spelling of 400220662 in words is "four hundred million, two hundred twenty thousand, six hundred sixty-two".