4400133644 has 12 divisors (see below), whose sum is σ = 7708692768. Its totient is φ = 2197650000.

The previous prime is 4400133641. The next prime is 4400133671. The reversal of 4400133644 is 4463310044.

It is a super-2 number, since 2×4400133644² = 38722352170121437472, which contains 22 as substring.

It is a hoax number, since the sum of its digits (29) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (4400133641) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 600107 + ... + 607394.

It is an arithmetic number, because the mean of its divisors is an integer number (642391064).

Almost surely, 2^4400133644 is an apocalyptic number.

It is an amenable number.

4400133644 is a deficient number, since it is larger than the sum of its proper divisors (3308559124).

4400133644 is a wasteful number, since it uses less digits than its factorization.

4400133644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1208416 (or 1208414 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 29.

The square root of 4400133644 is about 66333.5031790120. The cubic root of 4400133644 is about 1638.6591315442.

Adding to 4400133644 its reverse (4463310044), we get a palindrome (8863443688).

The spelling of 4400133644 in words is "four billion, four hundred million, one hundred thirty-three thousand, six hundred forty-four".