99969078 has 64 divisors (see below), whose sum is σ = 232968960. Its totient is φ = 28262400.

The previous prime is 99969031. The next prime is 99969091. The reversal of 99969078 is 87096999.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 155638 + ... + 156278.

It is an arithmetic number, because the mean of its divisors is an integer number (3640140).

Almost surely, 2^99969078 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 99969078, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (116484480).

99969078 is an abundant number, since it is smaller than the sum of its proper divisors (132999882).

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

99969078 is a wasteful number, since it uses less digits than its factorization.

99969078 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 813.

The product of its (nonzero) digits is 2204496, while the sum is 57.

The square root of 99969078 is about 9998.4537804603. The cubic root of 99969078 is about 464.1110360259. Note that the first 3 decimals are identical.

The spelling of 99969078 in words is "ninety-nine million, nine hundred sixty-nine thousand, seventy-eight".