47963989 has 2 divisors, whose sum is σ = 47963990. Its totient is φ = 47963988.

The previous prime is 47963977. The next prime is 47964001. The reversal of 47963989 is 98936974.

It is a balanced prime because it is at equal distance from previous prime (47963977) and next prime (47964001).

It can be written as a sum of positive squares in only one way, i.e., 36505764 + 11458225 = 6042^2 + 3385^2 .

It is a cyclic number.

It is not a de Polignac number, because 47963989 - 2²¹ = 45866837 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (47963939) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23981994 + 23981995.

It is an arithmetic number, because the mean of its divisors is an integer number (23981995).

Almost surely, 2^47963989 is an apocalyptic number.

It is an amenable number.

47963989 is a deficient number, since it is larger than the sum of its proper divisors (1).

47963989 is an equidigital number, since it uses as much as digits as its factorization.

47963989 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2939328, while the sum is 55.

The square root of 47963989 is about 6925.6038725876. The cubic root of 47963989 is about 363.3332120379. Note that the first 3 decimals are identical.

The spelling of 47963989 in words is "forty-seven million, nine hundred sixty-three thousand, nine hundred eighty-nine".