47351189 has 4 divisors (see below), whose sum is σ = 48127500. Its totient is φ = 46574880.

The previous prime is 47351179. The next prime is 47351191. The reversal of 47351189 is 98115374.

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 25654225 + 21696964 = 5065^2 + 4658^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-47351189 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 (47351149) 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, 388064 + ... + 388185.

It is an arithmetic number, because the mean of its divisors is an integer number (12031875).

Almost surely, 2^47351189 is an apocalyptic number.

It is an amenable number.

47351189 is a deficient number, since it is larger than the sum of its proper divisors (776311).

47351189 is an equidigital number, since it uses as much as digits as its factorization.

47351189 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 776310.

The product of its digits is 30240, while the sum is 38.

The square root of 47351189 is about 6881.2200226413. The cubic root of 47351189 is about 361.7792295707.

The spelling of 47351189 in words is "forty-seven million, three hundred fifty-one thousand, one hundred eighty-nine".