99985458999 has 8 divisors (see below), whose sum is σ = 133538760432. Its totient is φ = 66544565120.

The previous prime is 99985458973. The next prime is 99985459003.

It is a happy number.

99985458999 is nontrivially palindromic in base 10.

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 99985458999 - 2⁵ = 99985458967 is a prime.

It is a super-2 number, since 2×99985458999² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99985458899) 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, 28099812 + ... + 28103369.

It is an arithmetic number, because the mean of its divisors is an integer number (16692345054).

Almost surely, 2^99985458999 is an apocalyptic number.

99985458999 is a deficient number, since it is larger than the sum of its proper divisors (33553301433).

99985458999 is a wasteful number, since it uses less digits than its factorization.

99985458999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56203777.

The product of its digits is 3401222400, while the sum is 84.

The spelling of 99985458999 in words is "ninety-nine billion, nine hundred eighty-five million, four hundred fifty-eight thousand, nine hundred ninety-nine".