4476621644 has 24 divisors (see below), whose sum is σ = 8562725136. Its totient is φ = 2030912000.

The previous prime is 4476621641. The next prime is 4476621649. The reversal of 4476621644 is 4461266744.

4476621644 = T₁₆₄₅₅ + T₁₆₄₅₆ + ... + T₁₆₄₈₇.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a junction number, because it is equal to n+sod(n) for n = 4476621595 and 4476621604.

It is not an unprimeable number, because it can be changed into a prime (4476621641) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 74717 + ... + 120564.

It is an arithmetic number, because the mean of its divisors is an integer number (356780214).

Almost surely, 2^4476621644 is an apocalyptic number.

4476621644 is a gapful number since it is divisible by the number (44) formed by its first and last digit.

It is an amenable number.

4476621644 is a deficient number, since it is larger than the sum of its proper divisors (4086103492).

4476621644 is a wasteful number, since it uses less digits than its factorization.

4476621644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 195817 (or 195815 counting only the distinct ones).

The product of its digits is 774144, while the sum is 44.

The square root of 4476621644 is about 66907.5604397590. The cubic root of 4476621644 is about 1648.0996356914.

The spelling of 4476621644 in words is "four billion, four hundred seventy-six million, six hundred twenty-one thousand, six hundred forty-four".