47188389 has 8 divisors (see below), whose sum is σ = 63495520. Its totient is φ = 31170096.

The previous prime is 47188369. The next prime is 47188397. The reversal of 47188389 is 98388174.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 47188389 - 2²⁰ = 46139813 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 (47188369) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 71827 + ... + 72480.

It is an arithmetic number, because the mean of its divisors is an integer number (7936940).

Almost surely, 2^47188389 is an apocalyptic number.

It is an amenable number.

47188389 is a deficient number, since it is larger than the sum of its proper divisors (16307131).

47188389 is a wasteful number, since it uses less digits than its factorization.

47188389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144419.

The product of its digits is 387072, while the sum is 48.

The square root of 47188389 is about 6869.3805397576. The cubic root of 47188389 is about 361.3641376550.

The spelling of 47188389 in words is "forty-seven million, one hundred eighty-eight thousand, three hundred eighty-nine".