47157389 has 2 divisors, whose sum is σ = 47157390. Its totient is φ = 47157388.

The previous prime is 47157377. The next prime is 47157401. The reversal of 47157389 is 98375174.

47157389 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a balanced prime because it is at equal distance from previous prime (47157377) and next prime (47157401).

It can be written as a sum of positive squares in only one way, i.e., 38502025 + 8655364 = 6205^2 + 2942^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-47157389 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (47157359) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23578694 + 23578695.

It is an arithmetic number, because the mean of its divisors is an integer number (23578695).

Almost surely, 2^47157389 is an apocalyptic number.

It is an amenable number.

47157389 is a deficient number, since it is larger than the sum of its proper divisors (1).

47157389 is an equidigital number, since it uses as much as digits as its factorization.

47157389 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 211680, while the sum is 44.

The square root of 47157389 is about 6867.1237792834. The cubic root of 47157389 is about 361.2849886490.

The spelling of 47157389 in words is "forty-seven million, one hundred fifty-seven thousand, three hundred eighty-nine".