80911387 has 8 divisors (see below), whose sum is σ = 82605312. Its totient is φ = 79233000.

The previous prime is 80911373. The next prime is 80911427. The reversal of 80911387 is 78311908.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-80911387 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (80911307) 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 7 ways as a sum of consecutive naturals, for example, 6948 + ... + 14494.

It is an arithmetic number, because the mean of its divisors is an integer number (10325664).

Almost surely, 2^80911387 is an apocalyptic number.

80911387 is a deficient number, since it is larger than the sum of its proper divisors (1693925).

80911387 is a wasteful number, since it uses less digits than its factorization.

80911387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7769.

The product of its (nonzero) digits is 12096, while the sum is 37.

The square root of 80911387 is about 8995.0757084085. The cubic root of 80911387 is about 432.5170331982.

The spelling of 80911387 in words is "eighty million, nine hundred eleven thousand, three hundred eighty-seven".