447392819 has 2 divisors, whose sum is σ = 447392820. Its totient is φ = 447392818.

The previous prime is 447392761. The next prime is 447392821. The reversal of 447392819 is 918293744.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 447392819 - 2²⁰ = 446344243 is a prime.

It is a super-2 number, since 2×447392819² = 400320668985533522, which contains 22 as substring.

Together with 447392821, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (447392839) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 223696409 + 223696410.

It is an arithmetic number, because the mean of its divisors is an integer number (223696410).

Almost surely, 2^447392819 is an apocalyptic number.

447392819 is a deficient number, since it is larger than the sum of its proper divisors (1).

447392819 is an equidigital number, since it uses as much as digits as its factorization.

447392819 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 435456, while the sum is 47.

The square root of 447392819 is about 21151.6623223802. The cubic root of 447392819 is about 764.8266336463.

The spelling of 447392819 in words is "four hundred forty-seven million, three hundred ninety-two thousand, eight hundred nineteen".