47711138 has 8 divisors (see below), whose sum is σ = 71596332. Its totient is φ = 23845696.

The previous prime is 47711137. The next prime is 47711143. The reversal of 47711138 is 83111774.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 47706649 + 4489 = 6907^2 + 67^2 .

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

It is not an unprimeable number, because it can be changed into a prime (47711137) 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, 5606 + ... + 11262.

Almost surely, 2^47711138 is an apocalyptic number.

47711138 is a deficient number, since it is larger than the sum of its proper divisors (23885194).

47711138 is a wasteful number, since it uses less digits than its factorization.

47711138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9876.

The product of its digits is 4704, while the sum is 32.

The square root of 47711138 is about 6907.3249525413. The cubic root of 47711138 is about 362.6936275117.

The spelling of 47711138 in words is "forty-seven million, seven hundred eleven thousand, one hundred thirty-eight".