47405189 has 4 divisors (see below), whose sum is σ = 51051756. Its totient is φ = 43758624.

The previous prime is 47405179. The next prime is 47405207. The reversal of 47405189 is 98150474.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 14250625 + 33154564 = 3775^2 + 5758^2 .

It is not a de Polignac number, because 47405189 - 2²⁰ = 46356613 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47405119) 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, 1823264 + ... + 1823289.

It is an arithmetic number, because the mean of its divisors is an integer number (12762939).

Almost surely, 2^47405189 is an apocalyptic number.

It is an amenable number.

47405189 is a deficient number, since it is larger than the sum of its proper divisors (3646567).

47405189 is a wasteful number, since it uses less digits than its factorization.

47405189 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3646566.

The product of its (nonzero) digits is 40320, while the sum is 38.

The square root of 47405189 is about 6885.1426274261. The cubic root of 47405189 is about 361.9167034624.

The spelling of 47405189 in words is "forty-seven million, four hundred five thousand, one hundred eighty-nine".