3998801 has 2 divisors, whose sum is σ = 3998802. Its totient is φ = 3998800.

The previous prime is 3998789. The next prime is 3998809. The reversal of 3998801 is 1088993.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3701776 + 297025 = 1924^2 + 545^2 .

It is an emirp because it is prime and its reverse (1088993) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3998801 - 2⁶ = 3998737 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (3998809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1999400 + 1999401.

It is an arithmetic number, because the mean of its divisors is an integer number (1999401).

Almost surely, 2^3998801 is an apocalyptic number.

It is an amenable number.

3998801 is a deficient number, since it is larger than the sum of its proper divisors (1).

3998801 is an equidigital number, since it uses as much as digits as its factorization.

3998801 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15552, while the sum is 38.

The square root of 3998801 is about 1999.7002275341. The cubic root of 3998801 is about 158.7242428296.

The spelling of 3998801 in words is "three million, nine hundred ninety-eight thousand, eight hundred one".