3851249 has 4 divisors (see below), whose sum is σ = 3855936. Its totient is φ = 3846564.

The previous prime is 3851213. The next prime is 3851279. The reversal of 3851249 is 9421583.

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, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 9421583 = 101 ⋅93283.

It is a cyclic number.

It is not a de Polignac number, because 3851249 - 2²⁰ = 2802673 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3851279) 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, 749 + ... + 2874.

It is an arithmetic number, because the mean of its divisors is an integer number (963984).

Almost surely, 2^3851249 is an apocalyptic number.

It is an amenable number.

3851249 is a deficient number, since it is larger than the sum of its proper divisors (4687).

3851249 is a wasteful number, since it uses less digits than its factorization.

3851249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4686.

The product of its digits is 8640, while the sum is 32.

The square root of 3851249 is about 1962.4599358968. The cubic root of 3851249 is about 156.7474674994.

The spelling of 3851249 in words is "three million, eight hundred fifty-one thousand, two hundred forty-nine".