3986769 has 4 divisors (see below), whose sum is σ = 5315696. Its totient is φ = 2657844.

The previous prime is 3986767. The next prime is 3986771. The reversal of 3986769 is 9676893.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (3986767) and next prime (3986771).

It is not a de Polignac number, because 3986769 - 2¹ = 3986767 is a prime.

It is a super-2 number, since 2×3986769² = 31788654118722, which contains 22 as substring.

It is an Ulam number.

It is a D-number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3986761) 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, 664459 + ... + 664464.

It is an arithmetic number, because the mean of its divisors is an integer number (1328924).

Almost surely, 2^3986769 is an apocalyptic number.

It is an amenable number.

3986769 is a deficient number, since it is larger than the sum of its proper divisors (1328927).

3986769 is a wasteful number, since it uses less digits than its factorization.

3986769 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1328926.

The product of its digits is 489888, while the sum is 48.

The square root of 3986769 is about 1996.6895101643. The cubic root of 3986769 is about 158.5648876683.

The spelling of 3986769 in words is "three million, nine hundred eighty-six thousand, seven hundred sixty-nine".