47057989 has 12 divisors (see below), whose sum is σ = 54769932. Its totient is φ = 40261760.

The previous prime is 47057909. The next prime is 47057999. The reversal of 47057989 is 98975074.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 39312900 + 7745089 = 6270^2 + 2783^2 .

It is not a de Polignac number, because 47057989 - 2¹¹ = 47055941 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47057909) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9382 + ... + 13495.

It is an arithmetic number, because the mean of its divisors is an integer number (4564161).

Almost surely, 2^47057989 is an apocalyptic number.

It is an amenable number.

47057989 is a deficient number, since it is larger than the sum of its proper divisors (7711943).

47057989 is a wasteful number, since it uses less digits than its factorization.

47057989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22916 (or 22905 counting only the distinct ones).

The product of its (nonzero) digits is 635040, while the sum is 49.

The square root of 47057989 is about 6859.8825791700. The cubic root of 47057989 is about 361.0309670261.

The spelling of 47057989 in words is "forty-seven million, fifty-seven thousand, nine hundred eighty-nine".