3959749 has 8 divisors (see below), whose sum is σ = 4173120. Its totient is φ = 3749856.

The previous prime is 3959729. The next prime is 3959801. The reversal of 3959749 is 9479593.

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

It is a cyclic number.

It is not a de Polignac number, because 3959749 - 2⁹ = 3959237 is a prime.

It is a super-2 number, since 2×3959749² = 31359224286002, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 3959699 and 3959708.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3959719) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1657 + ... + 3265.

It is an arithmetic number, because the mean of its divisors is an integer number (521640).

Almost surely, 2^3959749 is an apocalyptic number.

It is an amenable number.

3959749 is a deficient number, since it is larger than the sum of its proper divisors (213371).

3959749 is a wasteful number, since it uses less digits than its factorization.

3959749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1739.

The product of its digits is 306180, while the sum is 46.

The square root of 3959749 is about 1989.9118070910. The cubic root of 3959749 is about 158.2058551633.

The spelling of 3959749 in words is "three million, nine hundred fifty-nine thousand, seven hundred forty-nine".