3899946247 has 2 divisors, whose sum is σ = 3899946248. Its totient is φ = 3899946246.

The previous prime is 3899946221. The next prime is 3899946301. The reversal of 3899946247 is 7426499983.

3899946247 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3899946247 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3899944247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1949973123 + 1949973124.

It is an arithmetic number, because the mean of its divisors is an integer number (1949973124).

Almost surely, 2^3899946247 is an apocalyptic number.

3899946247 is a deficient number, since it is larger than the sum of its proper divisors (1).

3899946247 is an equidigital number, since it uses as much as digits as its factorization.

3899946247 is an evil number, because the sum of its binary digits is even.

The product of its digits is 23514624, while the sum is 61.

The square root of 3899946247 is about 62449.5496140685. The cubic root of 3899946247 is about 1574.0536849319.

The spelling of 3899946247 in words is "three billion, eight hundred ninety-nine million, nine hundred forty-six thousand, two hundred forty-seven".