47924189 has 4 divisors (see below), whose sum is σ = 47976060. Its totient is φ = 47872320.

The previous prime is 47924179. The next prime is 47924221. The reversal of 47924189 is 98142974.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 98142974 = 2 ⋅49071487.

It can be written as a sum of positive squares in 2 ways, for example, as 13935289 + 33988900 = 3733^2 + 5830^2 .

It is a cyclic number.

It is not a de Polignac number, because 47924189 - 2⁸ = 47923933 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 (47924179) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24524 + ... + 26405.

It is an arithmetic number, because the mean of its divisors is an integer number (11994015).

Almost surely, 2^47924189 is an apocalyptic number.

It is an amenable number.

47924189 is a deficient number, since it is larger than the sum of its proper divisors (51871).

47924189 is an equidigital number, since it uses as much as digits as its factorization.

47924189 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51870.

The product of its digits is 145152, while the sum is 44.

The square root of 47924189 is about 6922.7298806179. The cubic root of 47924189 is about 363.2326875697.

The spelling of 47924189 in words is "forty-seven million, nine hundred twenty-four thousand, one hundred eighty-nine".