40009794850 has 12 divisors (see below), whose sum is σ = 74418218514. Its totient is φ = 16003917920.

The previous prime is 40009794841. The next prime is 40009794887. The reversal of 40009794850 is 5849790004.

It can be written as a sum of positive squares in 3 ways, for example, as 25291495089 + 14718299761 = 159033^2 + 121319^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 40009794850.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 400097899 + ... + 400097998.

Almost surely, 2^40009794850 is an apocalyptic number.

40009794850 is a deficient number, since it is larger than the sum of its proper divisors (34408423664).

40009794850 is a wasteful number, since it uses less digits than its factorization.

40009794850 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 800195909 (or 800195904 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 46.

The spelling of 40009794850 in words is "forty billion, nine million, seven hundred ninety-four thousand, eight hundred fifty".