3912849 has 6 divisors (see below), whose sum is σ = 5651906. Its totient is φ = 2608560.

The previous prime is 3912833. The next prime is 3912859. The reversal of 3912849 is 9482193.

It can be written as a sum of positive squares in only one way, i.e., 2772225 + 1140624 = 1665^2 + 1068^2 .

It is not a de Polignac number, because 3912849 - 2⁴ = 3912833 is a prime.

It is a Duffinian number.

3912849 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3912809) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 217372 + ... + 217389.

Almost surely, 2^3912849 is an apocalyptic number.

It is an amenable number.

3912849 is a deficient number, since it is larger than the sum of its proper divisors (1739057).

3912849 is a wasteful number, since it uses less digits than its factorization.

3912849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 434767 (or 434764 counting only the distinct ones).

The product of its digits is 15552, while the sum is 36.

The square root of 3912849 is about 1978.0922627623. The cubic root of 3912849 is about 157.5787663466.

It can be divided in two parts, 3912 and 849, that added together give a square (4761 = 69²).

The spelling of 3912849 in words is "three million, nine hundred twelve thousand, eight hundred forty-nine".