86946842 has 4 divisors (see below), whose sum is σ = 130420266. Its totient is φ = 43473420.

The previous prime is 86946841. The next prime is 86946883. The reversal of 86946842 is 24864968.

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., 56685841 + 30261001 = 7529^2 + 5501^2 .

It is not an unprimeable number, because it can be changed into a prime (86946841) 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 as a sum of consecutive naturals, namely, 21736709 + ... + 21736712.

Almost surely, 2^86946842 is an apocalyptic number.

86946842 is a deficient number, since it is larger than the sum of its proper divisors (43473424).

86946842 is a wasteful number, since it uses less digits than its factorization.

86946842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43473423.

The product of its digits is 663552, while the sum is 47.

The square root of 86946842 is about 9324.5290497698. The cubic root of 86946842 is about 443.0144964148.

The spelling of 86946842 in words is "eighty-six million, nine hundred forty-six thousand, eight hundred forty-two".