3912149 has 4 divisors (see below), whose sum is σ = 3918636. Its totient is φ = 3905664.

The previous prime is 3912131. The next prime is 3912199. The reversal of 3912149 is 9412193.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9412193 = 7 ⋅1344599.

It can be written as a sum of positive squares in 2 ways, for example, as 2002225 + 1909924 = 1415^2 + 1382^2 .

It is a cyclic number.

It is not a de Polignac number, because 3912149 - 2¹⁶ = 3846613 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3912109) 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, 2234 + ... + 3579.

It is an arithmetic number, because the mean of its divisors is an integer number (979659).

Almost surely, 2^3912149 is an apocalyptic number.

It is an amenable number.

3912149 is a deficient number, since it is larger than the sum of its proper divisors (6487).

3912149 is an equidigital number, since it uses as much as digits as its factorization.

3912149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6486.

The product of its digits is 1944, while the sum is 29.

The square root of 3912149 is about 1977.9153166908. The cubic root of 3912149 is about 157.5693689557.

The spelling of 3912149 in words is "three million, nine hundred twelve thousand, one hundred forty-nine".