99783161 has 4 divisors (see below), whose sum is σ = 99817872. Its totient is φ = 99748452.

The previous prime is 99783157. The next prime is 99783163. The reversal of 99783161 is 16138799.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 99783161 - 2² = 99783157 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (99783163) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12611 + ... + 18936.

It is an arithmetic number, because the mean of its divisors is an integer number (24954468).

Almost surely, 2^99783161 is an apocalyptic number.

It is an amenable number.

99783161 is a deficient number, since it is larger than the sum of its proper divisors (34711).

99783161 is a wasteful number, since it uses less digits than its factorization.

99783161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34710.

The product of its digits is 81648, while the sum is 44.

The square root of 99783161 is about 9989.1521662251. The cubic root of 99783161 is about 463.8231480822.

The spelling of 99783161 in words is "ninety-nine million, seven hundred eighty-three thousand, one hundred sixty-one".