47951789 has 2 divisors, whose sum is σ = 47951790. Its totient is φ = 47951788.

The previous prime is 47951779. The next prime is 47951791. The reversal of 47951789 is 98715974.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 24108100 + 23843689 = 4910^2 + 4883^2 .

It is a cyclic number.

It is not a de Polignac number, because 47951789 - 2¹² = 47947693 is a prime.

Together with 47951791, 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 (47951779) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23975894 + 23975895.

It is an arithmetic number, because the mean of its divisors is an integer number (23975895).

Almost surely, 2^47951789 is an apocalyptic number.

It is an amenable number.

47951789 is a deficient number, since it is larger than the sum of its proper divisors (1).

47951789 is an equidigital number, since it uses as much as digits as its factorization.

47951789 is an evil number, because the sum of its binary digits is even.

The product of its digits is 635040, while the sum is 50.

The square root of 47951789 is about 6924.7230269521. The cubic root of 47951789 is about 363.3024039173.

The spelling of 47951789 in words is "forty-seven million, nine hundred fifty-one thousand, seven hundred eighty-nine".