80877447 has 40 divisors (see below), whose sum is σ = 138880896. Its totient is φ = 46136952.

The previous prime is 80877439. The next prime is 80877469. The reversal of 80877447 is 74477808.

It is not a de Polignac number, because 80877447 - 2³ = 80877439 is a prime.

It is a super-2 number, since 2×80877447² = 13082322866475618, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80877437) 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 39 ways as a sum of consecutive naturals, for example, 137488 + ... + 138074.

Almost surely, 2^80877447 is an apocalyptic number.

80877447 is a deficient number, since it is larger than the sum of its proper divisors (58003449).

80877447 is an frugal number, since it uses more digits than its factorization.

80877447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 621 (or 597 counting only the distinct ones).

The product of its (nonzero) digits is 351232, while the sum is 45.

The square root of 80877447 is about 8993.1889227348. The cubic root of 80877447 is about 432.4565485879.

The spelling of 80877447 in words is "eighty million, eight hundred seventy-seven thousand, four hundred forty-seven".