99120655 has 4 divisors (see below), whose sum is σ = 118944792. Its totient is φ = 79296520.

The previous prime is 99120643. The next prime is 99120683. The reversal of 99120655 is 55602199.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 99120655 - 2⁹ = 99120143 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9912061 + ... + 9912070.

It is an arithmetic number, because the mean of its divisors is an integer number (29736198).

Almost surely, 2^99120655 is an apocalyptic number.

99120655 is a deficient number, since it is larger than the sum of its proper divisors (19824137).

99120655 is a wasteful number, since it uses less digits than its factorization.

99120655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19824136.

The product of its (nonzero) digits is 24300, while the sum is 37.

The square root of 99120655 is about 9955.9356667267. The cubic root of 99120655 is about 462.7943565674.

The spelling of 99120655 in words is "ninety-nine million, one hundred twenty thousand, six hundred fifty-five".