47146739689 has 9 divisors (see below), whose sum is σ = 54845934717. Its totient is φ = 40410188364.

The previous prime is 47146739641. The next prime is 47146739713. The reversal of 47146739689 is 98693764174.

The square root of 47146739689 is 217133.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 47146739689 - 2⁹ = 47146739177 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 47146739689.

It is not an unprimeable number, because it can be changed into a prime (47146730689) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 1504422 + ... + 1535440.

Almost surely, 2^47146739689 is an apocalyptic number.

47146739689 is a gapful number since it is divisible by the number (49) formed by its first and last digit.

47146739689 is the 217133-rd square number.

47146739689 is the 108567-th centered octagonal number.

It is an amenable number.

47146739689 is a deficient number, since it is larger than the sum of its proper divisors (7699195028).

47146739689 is an frugal number, since it uses more digits than its factorization.

47146739689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62052 (or 31026 counting only the distinct ones).

The product of its digits is 54867456, while the sum is 64.

Multiplying 47146739689 by its sum of digits (64), we get a square (3017391340096 = 1737064²).

The spelling of 47146739689 in words is "forty-seven billion, one hundred forty-six million, seven hundred thirty-nine thousand, six hundred eighty-nine".