3994159 has 4 divisors (see below), whose sum is σ = 4301416. Its totient is φ = 3686904.

The previous prime is 3994147. The next prime is 3994171. The reversal of 3994159 is 9514993.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9514993 = 41 ⋅232073.

It is an interprime number because it is at equal distance from previous prime (3994147) and next prime (3994171).

It is a de Polignac number, because none of the positive numbers 2^k-3994159 is a prime.

It is a super-2 number, since 2×3994159² = 31906612234562, 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 (3994189) 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, 153609 + ... + 153634.

It is an arithmetic number, because the mean of its divisors is an integer number (1075354).

Almost surely, 2^3994159 is an apocalyptic number.

3994159 is a deficient number, since it is larger than the sum of its proper divisors (307257).

3994159 is a wasteful number, since it uses less digits than its factorization.

3994159 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 307256.

The product of its digits is 43740, while the sum is 40.

The square root of 3994159 is about 1998.5392165279. The cubic root of 3994159 is about 158.6628008105.

It can be divided in two parts, 399415 and 9, that added together give a square (399424 = 632²).

The spelling of 3994159 in words is "three million, nine hundred ninety-four thousand, one hundred fifty-nine".