3999199 has 8 divisors (see below), whose sum is σ = 4252608. Its totient is φ = 3747840.

The previous prime is 3999161. The next prime is 3999209. The reversal of 3999199 is 9919993.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3999199 is a prime.

It is a Duffinian number.

3999199 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3999109) 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, 5919 + ... + 6559.

It is an arithmetic number, because the mean of its divisors is an integer number (531576).

Almost surely, 2^3999199 is an apocalyptic number.

3999199 is a deficient number, since it is larger than the sum of its proper divisors (253409).

3999199 is a wasteful number, since it uses less digits than its factorization.

3999199 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1025.

The product of its digits is 177147, while the sum is 49.

The square root of 3999199 is about 1999.7997399740. The cubic root of 3999199 is about 158.7295085874.

The spelling of 3999199 in words is "three million, nine hundred ninety-nine thousand, one hundred ninety-nine".