4404662644 has 12 divisors (see below), whose sum is σ = 7708774500. Its totient is φ = 2202155648.

The previous prime is 4404662627. The next prime is 4404662653. The reversal of 4404662644 is 4462664044.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1600960144 + 2803702500 = 40012^2 + 52950^2 .

It is a junction number, because it is equal to n+sod(n) for n = 4404662597 and 4404662606.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24252 + ... + 96940.

It is an arithmetic number, because the mean of its divisors is an integer number (642397875).

Almost surely, 2^4404662644 is an apocalyptic number.

It is an amenable number.

4404662644 is a deficient number, since it is larger than the sum of its proper divisors (3304111856).

4404662644 is a wasteful number, since it uses less digits than its factorization.

4404662644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87842 (or 87840 counting only the distinct ones).

The product of its (nonzero) digits is 442368, while the sum is 40.

The square root of 4404662644 is about 66367.6325025987. The cubic root of 4404662644 is about 1639.2211555630.

The spelling of 4404662644 in words is "four billion, four hundred four million, six hundred sixty-two thousand, six hundred forty-four".