86644442 has 8 divisors (see below), whose sum is σ = 134159232. Its totient is φ = 41924700.

The previous prime is 86644433. The next prime is 86644451. The reversal of 86644442 is 24444668.

It is an interprime number because it is at equal distance from previous prime (86644433) and next prime (86644451).

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

It is a nialpdrome in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 86644396 and 86644405.

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 in 3 ways as a sum of consecutive naturals, for example, 698684 + ... + 698807.

It is an arithmetic number, because the mean of its divisors is an integer number (16769904).

Almost surely, 2^86644442 is an apocalyptic number.

86644442 is a deficient number, since it is larger than the sum of its proper divisors (47514790).

86644442 is a wasteful number, since it uses less digits than its factorization.

86644442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1397524.

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

The square root of 86644442 is about 9308.2996299002. The cubic root of 86644442 is about 442.5003002541.

The spelling of 86644442 in words is "eighty-six million, six hundred forty-four thousand, four hundred forty-two".