3667939 has 4 divisors (see below), whose sum is σ = 4001400. Its totient is φ = 3334480.

The previous prime is 3667919. The next prime is 3667967. The reversal of 3667939 is 9397663.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9397663 = 11 ⋅854333.

It is a cyclic number.

It is not a de Polignac number, because 3667939 - 2⁵ = 3667907 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3667895 and 3667904.

It is not an unprimeable number, because it can be changed into a prime (3667919) 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, 166714 + ... + 166735.

It is an arithmetic number, because the mean of its divisors is an integer number (1000350).

Almost surely, 2^3667939 is an apocalyptic number.

3667939 is a deficient number, since it is larger than the sum of its proper divisors (333461).

3667939 is a wasteful number, since it uses less digits than its factorization.

3667939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 333460.

The product of its digits is 183708, while the sum is 43.

The square root of 3667939 is about 1915.1864139034. The cubic root of 3667939 is about 154.2200009608.

The spelling of 3667939 in words is "three million, six hundred sixty-seven thousand, nine hundred thirty-nine".