3969939 has 8 divisors (see below), whose sum is σ = 5302720. Its totient is φ = 2641896.

The previous prime is 3969937. The next prime is 3969943. The reversal of 3969939 is 9399693.

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

It is not a de Polignac number, because 3969939 - 2¹ = 3969937 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3969937) 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, 1992 + ... + 3450.

It is an arithmetic number, because the mean of its divisors is an integer number (662840).

Almost surely, 2^3969939 is an apocalyptic number.

3969939 is a deficient number, since it is larger than the sum of its proper divisors (1332781).

3969939 is a wasteful number, since it uses less digits than its factorization.

3969939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2369.

The product of its digits is 354294, while the sum is 48.

The square root of 3969939 is about 1992.4705769471. The cubic root of 3969939 is about 158.3414476605.

The spelling of 3969939 in words is "three million, nine hundred sixty-nine thousand, nine hundred thirty-nine".