3995389 has 4 divisors (see below), whose sum is σ = 3999424. Its totient is φ = 3991356.

The previous prime is 3995351. The next prime is 3995413. The reversal of 3995389 is 9835993.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 9835993 = 277 ⋅35509.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3995389 is a prime.

It is a super-2 number, since 2×3995389² = 31926266522642, 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 (3995489) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 604 + ... + 2890.

It is an arithmetic number, because the mean of its divisors is an integer number (999856).

Almost surely, 2^3995389 is an apocalyptic number.

It is an amenable number.

3995389 is a deficient number, since it is larger than the sum of its proper divisors (4035).

3995389 is a wasteful number, since it uses less digits than its factorization.

3995389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4034.

The product of its digits is 262440, while the sum is 46.

The square root of 3995389 is about 1998.8469176002. The cubic root of 3995389 is about 158.6790858587.

The spelling of 3995389 in words is "three million, nine hundred ninety-five thousand, three hundred eighty-nine".