80988361 has 4 divisors (see below), whose sum is σ = 81103300. Its totient is φ = 80873424.

The previous prime is 80988353. The next prime is 80988373. The reversal of 80988361 is 16388908.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 38007225 + 42981136 = 6165^2 + 6556^2 .

It is a cyclic number.

It is not a de Polignac number, because 80988361 - 2³ = 80988353 is a prime.

It is a super-2 number, since 2×80988361² = 13118229234932642, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (80988311) 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, 56406 + ... + 57823.

It is an arithmetic number, because the mean of its divisors is an integer number (20275825).

Almost surely, 2^80988361 is an apocalyptic number.

It is an amenable number.

80988361 is a deficient number, since it is larger than the sum of its proper divisors (114939).

80988361 is a wasteful number, since it uses less digits than its factorization.

80988361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114938.

The product of its (nonzero) digits is 82944, while the sum is 43.

The square root of 80988361 is about 8999.3533656591. The cubic root of 80988361 is about 432.6541462196.

The spelling of 80988361 in words is "eighty million, nine hundred eighty-eight thousand, three hundred sixty-one".