47038981949 has 2 divisors, whose sum is σ = 47038981950. Its totient is φ = 47038981948.

The previous prime is 47038981939. The next prime is 47038981973. The reversal of 47038981949 is 94918983074.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 46782661849 + 256320100 = 216293^2 + 16010^2 .

It is a cyclic number.

It is not a de Polignac number, because 47038981949 - 2²⁰ = 47037933373 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 47038981891 and 47038981900.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (47038981939) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23519490974 + 23519490975.

It is an arithmetic number, because the mean of its divisors is an integer number (23519490975).

Almost surely, 2^47038981949 is an apocalyptic number.

It is an amenable number.

47038981949 is a deficient number, since it is larger than the sum of its proper divisors (1).

47038981949 is an equidigital number, since it uses as much as digits as its factorization.

47038981949 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15676416, while the sum is 62.

The spelling of 47038981949 in words is "forty-seven billion, thirty-eight million, nine hundred eighty-one thousand, nine hundred forty-nine".