47708389 has 2 divisors, whose sum is σ = 47708390. Its totient is φ = 47708388.

The previous prime is 47708387. The next prime is 47708407. The reversal of 47708389 is 98380774.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 37576900 + 10131489 = 6130^2 + 3183^2 .

It is a cyclic number.

It is not a de Polignac number, because 47708389 - 2¹ = 47708387 is a prime.

Together with 47708387, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (47708387) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23854194 + 23854195.

It is an arithmetic number, because the mean of its divisors is an integer number (23854195).

Almost surely, 2^47708389 is an apocalyptic number.

It is an amenable number.

47708389 is a deficient number, since it is larger than the sum of its proper divisors (1).

47708389 is an equidigital number, since it uses as much as digits as its factorization.

47708389 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 338688, while the sum is 46.

The square root of 47708389 is about 6907.1259580234. The cubic root of 47708389 is about 362.6866615356.

The spelling of 47708389 in words is "forty-seven million, seven hundred eight thousand, three hundred eighty-nine".