47909377829 has 2 divisors, whose sum is σ = 47909377830. Its totient is φ = 47909377828.

The previous prime is 47909377823. The next prime is 47909377891. The reversal of 47909377829 is 92877390974.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 30205744804 + 17703633025 = 173798^2 + 133055^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-47909377829 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (47909377823) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23954688914 + 23954688915.

It is an arithmetic number, because the mean of its divisors is an integer number (23954688915).

Almost surely, 2^47909377829 is an apocalyptic number.

It is an amenable number.

47909377829 is a deficient number, since it is larger than the sum of its proper divisors (1).

47909377829 is an equidigital number, since it uses as much as digits as its factorization.

47909377829 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48009024, while the sum is 65.

The spelling of 47909377829 in words is "forty-seven billion, nine hundred nine million, three hundred seventy-seven thousand, eight hundred twenty-nine".