47879469397 has 2 divisors, whose sum is σ = 47879469398. Its totient is φ = 47879469396.

The previous prime is 47879469367. The next prime is 47879469401. The reversal of 47879469397 is 79396497874.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 47877378481 + 2090916 = 218809^2 + 1446^2 .

It is a cyclic number.

It is not a de Polignac number, because 47879469397 - 2⁷ = 47879469269 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (47879469347) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23939734698 + 23939734699.

It is an arithmetic number, because the mean of its divisors is an integer number (23939734699).

Almost surely, 2^47879469397 is an apocalyptic number.

It is an amenable number.

47879469397 is a deficient number, since it is larger than the sum of its proper divisors (1).

47879469397 is an equidigital number, since it uses as much as digits as its factorization.

47879469397 is an evil number, because the sum of its binary digits is even.

The product of its digits is 576108288, while the sum is 73.

The spelling of 47879469397 in words is "forty-seven billion, eight hundred seventy-nine million, four hundred sixty-nine thousand, three hundred ninety-seven".