85439446 has 4 divisors (see below), whose sum is σ = 128159172. Its totient is φ = 42719722.

The previous prime is 85439429. The next prime is 85439479. The reversal of 85439446 is 64493458.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21359860 + ... + 21359863.

It is an arithmetic number, because the mean of its divisors is an integer number (32039793).

Almost surely, 2^85439446 is an apocalyptic number.

85439446 is a deficient number, since it is larger than the sum of its proper divisors (42719726).

85439446 is a wasteful number, since it uses less digits than its factorization.

85439446 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42719725.

The product of its digits is 414720, while the sum is 43.

The square root of 85439446 is about 9243.3460391787. The cubic root of 85439446 is about 440.4393785890.

The spelling of 85439446 in words is "eighty-five million, four hundred thirty-nine thousand, four hundred forty-six".