99994155 has 16 divisors (see below), whose sum is σ = 160372224. Its totient is φ = 53203040.

The previous prime is 99994129. The next prime is 99994157. The reversal of 99994155 is 55149999.

It is a happy number.

It is not a de Polignac number, because 99994155 - 2⁵ = 99994123 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 99994098 and 99994107.

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 15 ways as a sum of consecutive naturals, for example, 1269 + ... + 14198.

It is an arithmetic number, because the mean of its divisors is an integer number (10023264).

Almost surely, 2^99994155 is an apocalyptic number.

99994155 is a deficient number, since it is larger than the sum of its proper divisors (60378069).

99994155 is a wasteful number, since it uses less digits than its factorization.

99994155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15906.

The product of its digits is 656100, while the sum is 51.

The square root of 99994155 is about 9999.7077457294. The cubic root of 99994155 is about 464.1498398228.

The spelling of 99994155 in words is "ninety-nine million, nine hundred ninety-four thousand, one hundred fifty-five".