99994158 has 72 divisors (see below), whose sum is σ = 245988288. Its totient is φ = 29304000.

The previous prime is 99994157. The next prime is 99994177. The reversal of 99994158 is 85149999.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99994157) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 66778 + ... + 68258.

It is an arithmetic number, because the mean of its divisors is an integer number (3416504).

Almost surely, 2^99994158 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 99994158, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (122994144).

99994158 is an abundant number, since it is smaller than the sum of its proper divisors (145994130).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

99994158 is a wasteful number, since it uses less digits than its factorization.

99994158 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1542 (or 1528 counting only the distinct ones).

The product of its digits is 1049760, while the sum is 54.

The square root of 99994158 is about 9999.7078957338. The cubic root of 99994158 is about 464.1498444646.

It can be divided in two parts, 999941 and 58, that added together give a palindrome (999999).

The spelling of 99994158 in words is "ninety-nine million, nine hundred ninety-four thousand, one hundred fifty-eight".