99161788 has 24 divisors (see below), whose sum is σ = 195839280. Its totient is φ = 43518720.

The previous prime is 99161767. The next prime is 99161789. The reversal of 99161788 is 88716199.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99161789) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37581 + ... + 40132.

It is an arithmetic number, because the mean of its divisors is an integer number (8159970).

Almost surely, 2^99161788 is an apocalyptic number.

It is an amenable number.

99161788 is a deficient number, since it is larger than the sum of its proper divisors (96677492).

99161788 is a wasteful number, since it uses less digits than its factorization.

99161788 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77757 (or 77755 counting only the distinct ones).

The product of its digits is 217728, while the sum is 49.

The square root of 99161788 is about 9958.0012050612. The cubic root of 99161788 is about 462.8583643758.

The spelling of 99161788 in words is "ninety-nine million, one hundred sixty-one thousand, seven hundred eighty-eight".