3842149 has 2 divisors, whose sum is σ = 3842150. Its totient is φ = 3842148.

The previous prime is 3842147. The next prime is 3842177. The reversal of 3842149 is 9412483.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2856100 + 986049 = 1690^2 + 993^2 .

It is a cyclic number.

It is not a de Polignac number, because 3842149 - 2¹ = 3842147 is a prime.

Together with 3842147, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 3842149.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3842143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1921074 + 1921075.

It is an arithmetic number, because the mean of its divisors is an integer number (1921075).

Almost surely, 2^3842149 is an apocalyptic number.

It is an amenable number.

3842149 is a deficient number, since it is larger than the sum of its proper divisors (1).

3842149 is an equidigital number, since it uses as much as digits as its factorization.

3842149 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6912, while the sum is 31.

The square root of 3842149 is about 1960.1400460171. The cubic root of 3842149 is about 156.6239121802.

The spelling of 3842149 in words is "three million, eight hundred forty-two thousand, one hundred forty-nine".