3980149 has 4 divisors (see below), whose sum is σ = 3985036. Its totient is φ = 3975264.

The previous prime is 3980147. The next prime is 3980161. The reversal of 3980149 is 9410893.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 9410893 = 2521 ⋅3733.

It can be written as a sum of positive squares in 2 ways, for example, as 3900625 + 79524 = 1975^2 + 282^2 .

It is a cyclic number.

It is not a de Polignac number, because 3980149 - 2¹ = 3980147 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 (3980143) 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, 894 + ... + 2959.

It is an arithmetic number, because the mean of its divisors is an integer number (996259).

Almost surely, 2^3980149 is an apocalyptic number.

It is an amenable number.

3980149 is a deficient number, since it is larger than the sum of its proper divisors (4887).

3980149 is a wasteful number, since it uses less digits than its factorization.

3980149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4886.

The product of its (nonzero) digits is 7776, while the sum is 34.

The square root of 3980149 is about 1995.0310774522. The cubic root of 3980149 is about 158.4770737770.

The spelling of 3980149 in words is "three million, nine hundred eighty thousand, one hundred forty-nine".