8400168479 has 2 divisors, whose sum is σ = 8400168480. Its totient is φ = 8400168478.

The previous prime is 8400168463. The next prime is 8400168499. The reversal of 8400168479 is 9748610048.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 8400168479 - 2⁴ = 8400168463 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8400168409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4200084239 + 4200084240.

It is an arithmetic number, because the mean of its divisors is an integer number (4200084240).

Almost surely, 2^8400168479 is an apocalyptic number.

8400168479 is a deficient number, since it is larger than the sum of its proper divisors (1).

8400168479 is an equidigital number, since it uses as much as digits as its factorization.

8400168479 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 387072, while the sum is 47.

The square root of 8400168479 is about 91652.4330228063. The cubic root of 8400168479 is about 2032.8063041295.

The spelling of 8400168479 in words is "eight billion, four hundred million, one hundred sixty-eight thousand, four hundred seventy-nine".