86776442 has 4 divisors (see below), whose sum is σ = 130164666. Its totient is φ = 43388220.

The previous prime is 86776421. The next prime is 86776559. The reversal of 86776442 is 24467768.

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., 70040161 + 16736281 = 8369^2 + 4091^2 .

It is a junction number, because it is equal to n+sod(n) for n = 86776393 and 86776402.

It is an unprimeable number.

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, 21694109 + ... + 21694112.

Almost surely, 2^86776442 is an apocalyptic number.

86776442 is a deficient number, since it is larger than the sum of its proper divisors (43388224).

86776442 is a wasteful number, since it uses less digits than its factorization.

86776442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43388223.

The product of its digits is 451584, while the sum is 44.

The square root of 86776442 is about 9315.3873778818. The cubic root of 86776442 is about 442.7248978602.

The spelling of 86776442 in words is "eighty-six million, seven hundred seventy-six thousand, four hundred forty-two".