47887289 has 2 divisors, whose sum is σ = 47887290. Its totient is φ = 47887288.

The previous prime is 47887271. The next prime is 47887309. The reversal of 47887289 is 98278874.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 35581225 + 12306064 = 5965^2 + 3508^2 .

It is a cyclic number.

It is not a de Polignac number, because 47887289 - 2¹² = 47883193 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 47887289.

It is not a weakly prime, because it can be changed into another prime (47887789) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23943644 + 23943645.

It is an arithmetic number, because the mean of its divisors is an integer number (23943645).

Almost surely, 2^47887289 is an apocalyptic number.

It is an amenable number.

47887289 is a deficient number, since it is larger than the sum of its proper divisors (1).

47887289 is an equidigital number, since it uses as much as digits as its factorization.

47887289 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1806336, while the sum is 53.

The square root of 47887289 is about 6920.0642338059. The cubic root of 47887289 is about 363.1394380163.

The spelling of 47887289 in words is "forty-seven million, eight hundred eighty-seven thousand, two hundred eighty-nine".