86447546 has 4 divisors (see below), whose sum is σ = 129671322. Its totient is φ = 43223772.

The previous prime is 86447531. The next prime is 86447597. The reversal of 86447546 is 64574468.

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

It can be written as a sum of positive squares in only one way, i.e., 59459521 + 26988025 = 7711^2 + 5195^2 .

It is a junction number, because it is equal to n+sod(n) for n = 86447497 and 86447506.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21611885 + ... + 21611888.

Almost surely, 2^86447546 is an apocalyptic number.

86447546 is a deficient number, since it is larger than the sum of its proper divisors (43223776).

86447546 is a wasteful number, since it uses less digits than its factorization.

86447546 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43223775.

The product of its digits is 645120, while the sum is 44.

The square root of 86447546 is about 9297.7172467224. The cubic root of 86447546 is about 442.1648580040.

The spelling of 86447546 in words is "eighty-six million, four hundred forty-seven thousand, five hundred forty-six".