3998111407 has 2 divisors, whose sum is σ = 3998111408. Its totient is φ = 3998111406.

The previous prime is 3998111393. The next prime is 3998111417. The reversal of 3998111407 is 7041118993.

3998111407 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 3998111407 - 2²⁷ = 3863893679 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3998111417) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1999055703 + 1999055704.

It is an arithmetic number, because the mean of its divisors is an integer number (1999055704).

Almost surely, 2^3998111407 is an apocalyptic number.

3998111407 is a deficient number, since it is larger than the sum of its proper divisors (1).

3998111407 is an equidigital number, since it uses as much as digits as its factorization.

3998111407 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 54432, while the sum is 43.

The square root of 3998111407 is about 63230.6208019501. The cubic root of 3998111407 is about 1587.1511830961.

The spelling of 3998111407 in words is "three billion, nine hundred ninety-eight million, one hundred eleven thousand, four hundred seven".