86444642 has 8 divisors (see below), whose sum is σ = 136491600. Its totient is φ = 40947444.

The previous prime is 86444599. The next prime is 86444693. The reversal of 86444642 is 24644468.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×86444642² = 14945352261016328, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (38), and also a Moran number because the ratio is a prime number: 2274859 = 86444642 / (8 + 6 + 4 + 4 + 4 + 6 + 4 + 2).

It is a junction number, because it is equal to n+sod(n) for n = 86444596 and 86444605.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1137392 + ... + 1137467.

It is an arithmetic number, because the mean of its divisors is an integer number (17061450).

Almost surely, 2^86444642 is an apocalyptic number.

86444642 is a deficient number, since it is larger than the sum of its proper divisors (50046958).

86444642 is a wasteful number, since it uses less digits than its factorization.

86444642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2274880.

The product of its digits is 147456, while the sum is 38.

The square root of 86444642 is about 9297.5610780462. The cubic root of 86444642 is about 442.1599067891.

The spelling of 86444642 in words is "eighty-six million, four hundred forty-four thousand, six hundred forty-two".