3980869 has 4 divisors (see below), whose sum is σ = 3994144. Its totient is φ = 3967596.

The previous prime is 3980857. The next prime is 3980887. The reversal of 3980869 is 9680893.

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 a cyclic number.

It is not a de Polignac number, because 3980869 - 2¹⁵ = 3948101 is a prime.

It is a super-2 number, since 2×3980869² = 31694635990322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3980819) 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 3 ways as a sum of consecutive naturals, for example, 6177 + ... + 6790.

It is an arithmetic number, because the mean of its divisors is an integer number (998536).

Almost surely, 2^3980869 is an apocalyptic number.

It is an amenable number.

3980869 is a deficient number, since it is larger than the sum of its proper divisors (13275).

3980869 is a wasteful number, since it uses less digits than its factorization.

3980869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13274.

The product of its (nonzero) digits is 93312, while the sum is 43.

The square root of 3980869 is about 1995.2115176091. The cubic root of 3980869 is about 158.4866292496.

It can be divided in two parts, 39 and 80869, that added together give a palindrome (80908).

The spelling of 3980869 in words is "three million, nine hundred eighty thousand, eight hundred sixty-nine".