85458709 has 8 divisors (see below), whose sum is σ = 98844480. Its totient is φ = 72367296.

The previous prime is 85458697. The next prime is 85458733. The reversal of 85458709 is 90785458.

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

It is a cyclic number.

It is not a de Polignac number, because 85458709 - 2¹⁵ = 85425941 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85458739) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 72964 + ... + 74125.

It is an arithmetic number, because the mean of its divisors is an integer number (12355560).

Almost surely, 2^85458709 is an apocalyptic number.

It is an amenable number.

85458709 is a deficient number, since it is larger than the sum of its proper divisors (13385771).

85458709 is a wasteful number, since it uses less digits than its factorization.

85458709 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147179.

The product of its (nonzero) digits is 403200, while the sum is 46.

The square root of 85458709 is about 9244.3879732517. The cubic root of 85458709 is about 440.4724762842.

The spelling of 85458709 in words is "eighty-five million, four hundred fifty-eight thousand, seven hundred nine".