3899399 has 4 divisors (see below), whose sum is σ = 4456464. Its totient is φ = 3342336.

The previous prime is 3899383. The next prime is 3899407. The reversal of 3899399 is 9939983.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 3899399 - 2⁴ = 3899383 is a prime.

It is a super-2 number, since 2×3899399² = 30410625122402, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3899309) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 278522 + ... + 278535.

It is an arithmetic number, because the mean of its divisors is an integer number (1114116).

Almost surely, 2^3899399 is an apocalyptic number.

3899399 is a deficient number, since it is larger than the sum of its proper divisors (557065).

3899399 is an equidigital number, since it uses as much as digits as its factorization.

3899399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 557064.

The product of its digits is 472392, while the sum is 50.

The square root of 3899399 is about 1974.6895958606. The cubic root of 3899399 is about 157.3980056870.

The spelling of 3899399 in words is "three million, eight hundred ninety-nine thousand, three hundred ninety-nine".