47989965 has 16 divisors (see below), whose sum is σ = 77867136. Its totient is φ = 25233600.

The previous prime is 47989939. The next prime is 47989969. The reversal of 47989965 is 56998974.

47989965 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 47989965 - 2⁸ = 47989709 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47989969) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21466 + ... + 23595.

It is an arithmetic number, because the mean of its divisors is an integer number (4866696).

Almost surely, 2^47989965 is an apocalyptic number.

It is an amenable number.

47989965 is a deficient number, since it is larger than the sum of its proper divisors (29877171).

47989965 is a wasteful number, since it uses less digits than its factorization.

47989965 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45140.

The product of its digits is 4898880, while the sum is 57.

The square root of 47989965 is about 6927.4789786762. The cubic root of 47989965 is about 363.3987906830.

Subtracting 47989965 from its reverse (56998974), we obtain a palindrome (9009009).

The spelling of 47989965 in words is "forty-seven million, nine hundred eighty-nine thousand, nine hundred sixty-five".