99578798 has 16 divisors (see below), whose sum is σ = 166738176. Its totient is φ = 44210040.

The previous prime is 99578797. The next prime is 99578833. The reversal of 99578798 is 89787599.

It is a super-2 number, since 2×99578798² = 19831874022249608, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 99578798.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99578797) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 51686 + ... + 53577.

It is an arithmetic number, because the mean of its divisors is an integer number (10421136).

Almost surely, 2^99578798 is an apocalyptic number.

99578798 is a deficient number, since it is larger than the sum of its proper divisors (67159378).

99578798 is a wasteful number, since it uses less digits than its factorization.

99578798 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105319.

The product of its digits is 11430720, while the sum is 62.

The square root of 99578798 is about 9978.9176767824. The cubic root of 99578798 is about 463.5062840815.

The spelling of 99578798 in words is "ninety-nine million, five hundred seventy-eight thousand, seven hundred ninety-eight".