47981189 has 4 divisors (see below), whose sum is σ = 48208800. Its totient is φ = 47753580.

The previous prime is 47981183. The next prime is 47981201. The reversal of 47981189 is 98118974.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-47981189 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 (47981183) 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, 113489 + ... + 113910.

It is an arithmetic number, because the mean of its divisors is an integer number (12052200).

Almost surely, 2^47981189 is an apocalyptic number.

It is an amenable number.

47981189 is a deficient number, since it is larger than the sum of its proper divisors (227611).

47981189 is a wasteful number, since it uses less digits than its factorization.

47981189 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 227610.

The product of its digits is 145152, while the sum is 47.

The square root of 47981189 is about 6926.8455302540. The cubic root of 47981189 is about 363.3766375641.

The spelling of 47981189 in words is "forty-seven million, nine hundred eighty-one thousand, one hundred eighty-nine".