3924869 has 4 divisors (see below), whose sum is σ = 4226796. Its totient is φ = 3622944.

The previous prime is 3924863. The next prime is 3924871. The reversal of 3924869 is 9684293.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2362369 + 1562500 = 1537^2 + 1250^2 .

It is not a de Polignac number, because 3924869 - 2⁴ = 3924853 is a prime.

It is a super-2 number, since 2×3924869² = 30809193334322, 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 (3924863) 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, 150944 + ... + 150969.

It is an arithmetic number, because the mean of its divisors is an integer number (1056699).

Almost surely, 2^3924869 is an apocalyptic number.

It is an amenable number.

3924869 is a deficient number, since it is larger than the sum of its proper divisors (301927).

3924869 is a wasteful number, since it uses less digits than its factorization.

3924869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 301926.

The product of its digits is 93312, while the sum is 41.

The square root of 3924869 is about 1981.1282139226. The cubic root of 3924869 is about 157.7399584059.

The spelling of 3924869 in words is "three million, nine hundred twenty-four thousand, eight hundred sixty-nine".