40222664 has 8 divisors (see below), whose sum is σ = 75417510. Its totient is φ = 20111328.

The previous prime is 40222661. The next prime is 40222687. The reversal of 40222664 is 46622204.

It can be written as a sum of positive squares in only one way, i.e., 29789764 + 10432900 = 5458^2 + 3230^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (40222661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2513909 + ... + 2513924.

Almost surely, 2^40222664 is an apocalyptic number.

It is an amenable number.

40222664 is a deficient number, since it is larger than the sum of its proper divisors (35194846).

40222664 is a wasteful number, since it uses less digits than its factorization.

40222664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5027839 (or 5027835 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 26.

The square root of 40222664 is about 6342.1340257046. The cubic root of 40222664 is about 342.6285989462.

Adding to 40222664 its reverse (46622204), we get a palindrome (86844868).

The spelling of 40222664 in words is "forty million, two hundred twenty-two thousand, six hundred sixty-four".