10209309444 has 48 divisors (see below), whose sum is σ = 27861668800. Its totient is φ = 3223991808.

The previous prime is 10209309433. The next prime is 10209309457. The reversal of 10209309444 is 44490390201.

10209309444 is a `hidden beast` number, since 1 + 0 + 209 + 3 + 0 + 9 + 444 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 10209309399 and 10209309408.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2485597 + ... + 2489700.

Almost surely, 2^10209309444 is an apocalyptic number.

It is an amenable number.

10209309444 is an abundant number, since it is smaller than the sum of its proper divisors (17652359356).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

10209309444 is a wasteful number, since it uses less digits than its factorization.

10209309444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4975329 (or 4975321 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 36.

Adding to 10209309444 its reverse (44490390201), we get a palindrome (54699699645).

The spelling of 10209309444 in words is "ten billion, two hundred nine million, three hundred nine thousand, four hundred forty-four".