99442155 has 8 divisors (see below), whose sum is σ = 159107472. Its totient is φ = 53035808.

The previous prime is 99442121. The next prime is 99442157. The reversal of 99442155 is 55124499.

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 99442155 - 2¹⁶ = 99376619 is a prime.

It is not an unprimeable number, because it can be changed into a prime (99442157) 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, 3314724 + ... + 3314753.

It is an arithmetic number, because the mean of its divisors is an integer number (19888434).

Almost surely, 2^99442155 is an apocalyptic number.

99442155 is a deficient number, since it is larger than the sum of its proper divisors (59665317).

99442155 is a wasteful number, since it uses less digits than its factorization.

99442155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6629485.

The product of its digits is 64800, while the sum is 39.

The square root of 99442155 is about 9972.0687422420. The cubic root of 99442155 is about 463.2941777491.

The spelling of 99442155 in words is "ninety-nine million, four hundred forty-two thousand, one hundred fifty-five".