47138884 has 12 divisors (see below), whose sum is σ = 88838764. Its totient is φ = 21756384.

The previous prime is 47138881. The next prime is 47138893. The reversal of 47138884 is 48883174.

47138884 is nontrivially palindromic in base 15.

It can be written as a sum of positive squares in 2 ways, for example, as 30492484 + 16646400 = 5522^2 + 4080^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 47138884.

It is not an unprimeable number, because it can be changed into a prime (47138881) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 453207 + ... + 453310.

Almost surely, 2^47138884 is an apocalyptic number.

It is an amenable number.

47138884 is a deficient number, since it is larger than the sum of its proper divisors (41699880).

47138884 is a wasteful number, since it uses less digits than its factorization.

47138884 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 906534 (or 906532 counting only the distinct ones).

The product of its digits is 172032, while the sum is 43.

The square root of 47138884 is about 6865.7762853154. The cubic root of 47138884 is about 361.2377252647.

The spelling of 47138884 in words is "forty-seven million, one hundred thirty-eight thousand, eight hundred eighty-four".