99779853 has 8 divisors (see below), whose sum is σ = 133110016. Its totient is φ = 66484800.

The previous prime is 99779839. The next prime is 99779873. The reversal of 99779853 is 35897799.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 99779853 - 2⁸ = 99779597 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 99779793 and 99779802.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99779803) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1213 + ... + 14178.

It is an arithmetic number, because the mean of its divisors is an integer number (16638752).

Almost surely, 2^99779853 is an apocalyptic number.

It is an amenable number.

99779853 is a deficient number, since it is larger than the sum of its proper divisors (33330163).

99779853 is a wasteful number, since it uses less digits than its factorization.

99779853 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17555.

The product of its digits is 4286520, while the sum is 57.

The square root of 99779853 is about 9988.9865852348. The cubic root of 99779853 is about 463.8180224881.

The spelling of 99779853 in words is "ninety-nine million, seven hundred seventy-nine thousand, eight hundred fifty-three".