3999801 has 8 divisors (see below), whose sum is σ = 5743360. Its totient is φ = 2461392.

The previous prime is 3999791. The next prime is 3999803. The reversal of 3999801 is 1089993.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 3999801 - 2¹³ = 3991609 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39), and also a Moran number because the ratio is a prime number: 102559 = 3999801 / (3 + 9 + 9 + 9 + 8 + 0 + 1).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3999801.

It is not an unprimeable number, because it can be changed into a prime (3999803) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 51241 + ... + 51318.

It is an arithmetic number, because the mean of its divisors is an integer number (717920).

Almost surely, 2^3999801 is an apocalyptic number.

It is an amenable number.

3999801 is a deficient number, since it is larger than the sum of its proper divisors (1743559).

3999801 is a wasteful number, since it uses less digits than its factorization.

3999801 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102575.

The product of its (nonzero) digits is 17496, while the sum is 39.

The square root of 3999801 is about 1999.9502493812. The cubic root of 3999801 is about 158.7374727131.

The spelling of 3999801 in words is "three million, nine hundred ninety-nine thousand, eight hundred one".