394416247 has 2 divisors, whose sum is σ = 394416248. Its totient is φ = 394416246.

The previous prime is 394416233. The next prime is 394416257. The reversal of 394416247 is 742614493.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 394416247 - 2¹¹ = 394414199 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (394416257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 197208123 + 197208124.

It is an arithmetic number, because the mean of its divisors is an integer number (197208124).

Almost surely, 2^394416247 is an apocalyptic number.

394416247 is a deficient number, since it is larger than the sum of its proper divisors (1).

394416247 is an equidigital number, since it uses as much as digits as its factorization.

394416247 is an evil number, because the sum of its binary digits is even.

The product of its digits is 145152, while the sum is 40.

The square root of 394416247 is about 19859.9155839092. The cubic root of 394416247 is about 733.3617681582.

The spelling of 394416247 in words is "three hundred ninety-four million, four hundred sixteen thousand, two hundred forty-seven".