3969727 has 4 divisors (see below), whose sum is σ = 4178680. Its totient is φ = 3760776.

The previous prime is 3969709. The next prime is 3969733. The reversal of 3969727 is 7279693.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7279693 = 149 ⋅48857.

It is a cyclic number.

It is not a de Polignac number, because 3969727 - 2¹¹ = 3967679 is a prime.

It is a Duffinian number.

3969727 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3969737) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 104448 + ... + 104485.

It is an arithmetic number, because the mean of its divisors is an integer number (1044670).

Almost surely, 2^3969727 is an apocalyptic number.

3969727 is a deficient number, since it is larger than the sum of its proper divisors (208953).

3969727 is a wasteful number, since it uses less digits than its factorization.

3969727 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 208952.

The product of its digits is 142884, while the sum is 43.

The square root of 3969727 is about 1992.4173759531. The cubic root of 3969727 is about 158.3386290626.

The spelling of 3969727 in words is "three million, nine hundred sixty-nine thousand, seven hundred twenty-seven".