80444887 has 4 divisors (see below), whose sum is σ = 80474616. Its totient is φ = 80415160.

The previous prime is 80444863. The next prime is 80444921. The reversal of 80444887 is 78844408.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-80444887 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 (80444387) 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, 10348 + ... + 16369.

It is an arithmetic number, because the mean of its divisors is an integer number (20118654).

Almost surely, 2^80444887 is an apocalyptic number.

80444887 is a deficient number, since it is larger than the sum of its proper divisors (29729).

80444887 is a wasteful number, since it uses less digits than its factorization.

80444887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29728.

The product of its (nonzero) digits is 229376, while the sum is 43.

The square root of 80444887 is about 8969.1073691867. The cubic root of 80444887 is about 431.6841952768.

The spelling of 80444887 in words is "eighty million, four hundred forty-four thousand, eight hundred eighty-seven".