3995139 has 8 divisors (see below), whose sum is σ = 5382160. Its totient is φ = 2635776.

The previous prime is 3995129. The next prime is 3995161. The reversal of 3995139 is 9315993.

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

It is not a de Polignac number, because 3995139 - 2¹¹ = 3993091 is a prime.

It is a super-2 number, since 2×3995139² = 31922271258642, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3995097 and 3995106.

It is not an unprimeable number, because it can be changed into a prime (3995129) 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, 6574 + ... + 7155.

It is an arithmetic number, because the mean of its divisors is an integer number (672770).

Almost surely, 2^3995139 is an apocalyptic number.

3995139 is a deficient number, since it is larger than the sum of its proper divisors (1387021).

3995139 is a wasteful number, since it uses less digits than its factorization.

3995139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13829.

The product of its digits is 32805, while the sum is 39.

The square root of 3995139 is about 1998.7843805673. The cubic root of 3995139 is about 158.6757761602.

The spelling of 3995139 in words is "three million, nine hundred ninety-five thousand, one hundred thirty-nine".