5209226644 has 24 divisors (see below), whose sum is σ = 9146555208. Its totient is φ = 2595941760.

The previous prime is 5209226629. The next prime is 5209226651. The reversal of 5209226644 is 4466229025.

It can be written as a sum of positive squares in 4 ways, for example, as 261792400 + 4947434244 = 16180^2 + 70338^2 .

It is a junction number, because it is equal to n+sod(n) for n = 5209226597 and 5209226606.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1899114 + ... + 1901854.

It is an arithmetic number, because the mean of its divisors is an integer number (381106467).

Almost surely, 2^5209226644 is an apocalyptic number.

It is an amenable number.

5209226644 is a deficient number, since it is larger than the sum of its proper divisors (3937328564).

5209226644 is a wasteful number, since it uses less digits than its factorization.

5209226644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4155 (or 4153 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 40.

The square root of 5209226644 is about 72174.9724211932. The cubic root of 5209226644 is about 1733.5022821348.

The spelling of 5209226644 in words is "five billion, two hundred nine million, two hundred twenty-six thousand, six hundred forty-four".