394466447 has 2 divisors, whose sum is σ = 394466448. Its totient is φ = 394466446.

The previous prime is 394466431. The next prime is 394466461. The reversal of 394466447 is 744664493.

It is a strong prime.

It is an emirp because it is prime and its reverse (744664493) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 394466447 - 2⁴ = 394466431 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (394462447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 197233223 + 197233224.

It is an arithmetic number, because the mean of its divisors is an integer number (197233224).

Almost surely, 2^394466447 is an apocalyptic number.

394466447 is a deficient number, since it is larger than the sum of its proper divisors (1).

394466447 is an equidigital number, since it uses as much as digits as its factorization.

394466447 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1741824, while the sum is 47.

The square root of 394466447 is about 19861.1793959976. The cubic root of 394466447 is about 733.3928801279.

The spelling of 394466447 in words is "three hundred ninety-four million, four hundred sixty-six thousand, four hundred forty-seven".