8509402444 has 6 divisors (see below), whose sum is σ = 14891454284. Its totient is φ = 4254701220.

The previous prime is 8509402399. The next prime is 8509402471. The reversal of 8509402444 is 4442049058.

It is a junction number, because it is equal to n+sod(n) for n = 8509402397 and 8509402406.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1063675302 + ... + 1063675309.

Almost surely, 2^8509402444 is an apocalyptic number.

It is an amenable number.

8509402444 is a deficient number, since it is larger than the sum of its proper divisors (6382051840).

8509402444 is a wasteful number, since it uses less digits than its factorization.

8509402444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2127350615 (or 2127350613 counting only the distinct ones).

The product of its (nonzero) digits is 184320, while the sum is 40.

The square root of 8509402444 is about 92246.4223913318. The cubic root of 8509402444 is about 2041.5797743219.

The spelling of 8509402444 in words is "eight billion, five hundred nine million, four hundred two thousand, four hundred forty-four".