3870149 has 2 divisors, whose sum is σ = 3870150. Its totient is φ = 3870148.

The previous prime is 3870077. The next prime is 3870157. The reversal of 3870149 is 9410783.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2856100 + 1014049 = 1690^2 + 1007^2 .

It is an emirp because it is prime and its reverse (9410783) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3870149 - 2¹⁶ = 3804613 is a prime.

It is a Chen prime.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3870179) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1935074 + 1935075.

It is an arithmetic number, because the mean of its divisors is an integer number (1935075).

Almost surely, 2^3870149 is an apocalyptic number.

It is an amenable number.

3870149 is a deficient number, since it is larger than the sum of its proper divisors (1).

3870149 is an equidigital number, since it uses as much as digits as its factorization.

3870149 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6048, while the sum is 32.

The square root of 3870149 is about 1967.2694274044. The cubic root of 3870149 is about 157.0034618626.

It can be divided in two parts, 38 and 70149, that multiplied together give a palindrome (2665662).

The spelling of 3870149 in words is "three million, eight hundred seventy thousand, one hundred forty-nine".