47989013 has 4 divisors (see below), whose sum is σ = 48031788. Its totient is φ = 47946240.

The previous prime is 47989001. The next prime is 47989027. The reversal of 47989013 is 31098974.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 31098974 = 2 ⋅15549487.

It can be written as a sum of positive squares in 2 ways, for example, as 29343889 + 18645124 = 5417^2 + 4318^2 .

It is a cyclic number.

It is not a de Polignac number, because 47989013 - 2⁶ = 47988949 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 (47989033) 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 3 ways as a sum of consecutive naturals, for example, 19658 + ... + 21963.

It is an arithmetic number, because the mean of its divisors is an integer number (12007947).

Almost surely, 2^47989013 is an apocalyptic number.

It is an amenable number.

47989013 is a deficient number, since it is larger than the sum of its proper divisors (42775).

47989013 is a wasteful number, since it uses less digits than its factorization.

47989013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42774.

The product of its (nonzero) digits is 54432, while the sum is 41.

The square root of 47989013 is about 6927.4102664704. The cubic root of 47989013 is about 363.3963876950.

The spelling of 47989013 in words is "forty-seven million, nine hundred eighty-nine thousand, thirteen".