85458109 has 8 divisors (see below), whose sum is σ = 93629952. Its totient is φ = 77353440.

The previous prime is 85458097. The next prime is 85458127. The reversal of 85458109 is 90185458.

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 85458109 - 2⁹ = 85457597 is a prime.

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

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85458199) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14109 + ... + 19234.

It is an arithmetic number, because the mean of its divisors is an integer number (11703744).

Almost surely, 2^85458109 is an apocalyptic number.

It is an amenable number.

85458109 is a deficient number, since it is larger than the sum of its proper divisors (8171843).

85458109 is a wasteful number, since it uses less digits than its factorization.

85458109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33587.

The product of its (nonzero) digits is 57600, while the sum is 40.

The square root of 85458109 is about 9244.3555210734. The cubic root of 85458109 is about 440.4714454390.

The spelling of 85458109 in words is "eighty-five million, four hundred fifty-eight thousand, one hundred nine".