7980149 has 4 divisors (see below), whose sum is σ = 8327136. Its totient is φ = 7633164.

The previous prime is 7980143. The next prime is 7980151. The reversal of 7980149 is 9410897.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 9410897 = 61 ⋅154277.

It is a cyclic number.

It is not a de Polignac number, because 7980149 - 2⁸ = 7979893 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 (7980143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 173459 + ... + 173504.

It is an arithmetic number, because the mean of its divisors is an integer number (2081784).

Almost surely, 2^7980149 is an apocalyptic number.

It is an amenable number.

7980149 is a deficient number, since it is larger than the sum of its proper divisors (346987).

7980149 is a wasteful number, since it uses less digits than its factorization.

7980149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 346986.

The product of its (nonzero) digits is 18144, while the sum is 38.

The square root of 7980149 is about 2824.9157509561. The cubic root of 7980149 is about 199.8344379839.

The spelling of 7980149 in words is "seven million, nine hundred eighty thousand, one hundred forty-nine".