3974892847 has 2 divisors, whose sum is σ = 3974892848. Its totient is φ = 3974892846.

The previous prime is 3974892841. The next prime is 3974892871. The reversal of 3974892847 is 7482984793.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 3974892847 - 2¹⁵ = 3974860079 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3974892841) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1987446423 + 1987446424.

It is an arithmetic number, because the mean of its divisors is an integer number (1987446424).

Almost surely, 2^3974892847 is an apocalyptic number.

3974892847 is a deficient number, since it is larger than the sum of its proper divisors (1).

3974892847 is an equidigital number, since it uses as much as digits as its factorization.

3974892847 is an evil number, because the sum of its binary digits is even.

The product of its digits is 24385536, while the sum is 61.

The square root of 3974892847 is about 63046.7512802999. The cubic root of 3974892847 is about 1584.0728185955.

The spelling of 3974892847 in words is "three billion, nine hundred seventy-four million, eight hundred ninety-two thousand, eight hundred forty-seven".