3994481567 has 2 divisors, whose sum is σ = 3994481568. Its totient is φ = 3994481566.

The previous prime is 3994481501. The next prime is 3994481629. The reversal of 3994481567 is 7651844993.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 3994481567 - 2¹⁰ = 3994480543 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3994481767) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1997240783 + 1997240784.

It is an arithmetic number, because the mean of its divisors is an integer number (1997240784).

Almost surely, 2^3994481567 is an apocalyptic number.

3994481567 is a deficient number, since it is larger than the sum of its proper divisors (1).

3994481567 is an equidigital number, since it uses as much as digits as its factorization.

3994481567 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6531840, while the sum is 56.

The square root of 3994481567 is about 63201.9111024342. The cubic root of 3994481567 is about 1586.6707188115.

The spelling of 3994481567 in words is "three billion, nine hundred ninety-four million, four hundred eighty-one thousand, five hundred sixty-seven".