3923479447 has 2 divisors, whose sum is σ = 3923479448. Its totient is φ = 3923479446.

The previous prime is 3923479429. The next prime is 3923479457. The reversal of 3923479447 is 7449743293.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3923479447 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 3923479394 and 3923479403.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3923479457) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1961739723 + 1961739724.

It is an arithmetic number, because the mean of its divisors is an integer number (1961739724).

Almost surely, 2^3923479447 is an apocalyptic number.

3923479447 is a deficient number, since it is larger than the sum of its proper divisors (1).

3923479447 is an equidigital number, since it uses as much as digits as its factorization.

3923479447 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4572288, while the sum is 52.

The square root of 3923479447 is about 62637.6839211030. The cubic root of 3923479447 is about 1577.2134089238.

The spelling of 3923479447 in words is "three billion, nine hundred twenty-three million, four hundred seventy-nine thousand, four hundred forty-seven".