3158639 has 4 divisors (see below), whose sum is σ = 3445800. Its totient is φ = 2871480.

The previous prime is 3158633. The next prime is 3158671. The reversal of 3158639 is 9368513.

3158639 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 3158639 - 2²⁰ = 2110063 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3158599 and 3158608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3158633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 143564 + ... + 143585.

It is an arithmetic number, because the mean of its divisors is an integer number (861450).

Almost surely, 2^3158639 is an apocalyptic number.

3158639 is a deficient number, since it is larger than the sum of its proper divisors (287161).

3158639 is a wasteful number, since it uses less digits than its factorization.

3158639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 287160.

The product of its digits is 19440, while the sum is 35.

The square root of 3158639 is about 1777.2560310771. The cubic root of 3158639 is about 146.7236079410.

The spelling of 3158639 in words is "three million, one hundred fifty-eight thousand, six hundred thirty-nine".