47887949 has 2 divisors, whose sum is σ = 47887950. Its totient is φ = 47887948.

The previous prime is 47887921. The next prime is 47888003. The reversal of 47887949 is 94978874.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 46717225 + 1170724 = 6835^2 + 1082^2 .

It is a cyclic number.

It is not a de Polignac number, because 47887949 - 2¹² = 47883853 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 47887894 and 47887903.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (47887919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23943974 + 23943975.

It is an arithmetic number, because the mean of its divisors is an integer number (23943975).

Almost surely, 2^47887949 is an apocalyptic number.

It is an amenable number.

47887949 is a deficient number, since it is larger than the sum of its proper divisors (1).

47887949 is an equidigital number, since it uses as much as digits as its factorization.

47887949 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4064256, while the sum is 56.

The square root of 47887949 is about 6920.1119210602. Note that the first 3 decimals coincide. The cubic root of 47887949 is about 363.1411063151.

The spelling of 47887949 in words is "forty-seven million, eight hundred eighty-seven thousand, nine hundred forty-nine".