80988149 has 4 divisors (see below), whose sum is σ = 88350720. Its totient is φ = 73625580.

The previous prime is 80988139. The next prime is 80988157. The reversal of 80988149 is 94188908.

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.

It is a cyclic number.

It is not a de Polignac number, because 80988149 - 2¹⁶ = 80922613 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 (80988109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3681269 + ... + 3681290.

It is an arithmetic number, because the mean of its divisors is an integer number (22087680).

Almost surely, 2^80988149 is an apocalyptic number.

It is an amenable number.

80988149 is a deficient number, since it is larger than the sum of its proper divisors (7362571).

80988149 is a wasteful number, since it uses less digits than its factorization.

80988149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7362570.

The product of its (nonzero) digits is 165888, while the sum is 47.

The square root of 80988149 is about 8999.3415870274. The cubic root of 80988149 is about 432.6537687054.

The spelling of 80988149 in words is "eighty million, nine hundred eighty-eight thousand, one hundred forty-nine".