99143770 has 24 divisors (see below), whose sum is σ = 196159572. Its totient is φ = 36051840.

The previous prime is 99143753. The next prime is 99143771. The reversal of 99143770 is 7734199.

It can be written as a sum of positive squares in 2 ways, for example, as 98227921 + 915849 = 9911^2 + 957^2 .

It is not an unprimeable number, because it can be changed into a prime (99143771) 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 11 ways as a sum of consecutive naturals, for example, 39759 + ... + 42178.

Almost surely, 2^99143770 is an apocalyptic number.

99143770 is a deficient number, since it is larger than the sum of its proper divisors (97015802).

99143770 is a wasteful number, since it uses less digits than its factorization.

99143770 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81966 (or 81955 counting only the distinct ones).

The product of its (nonzero) digits is 47628, while the sum is 40.

The square root of 99143770 is about 9957.0964643314. The cubic root of 99143770 is about 462.8303284177.

The spelling of 99143770 in words is "ninety-nine million, one hundred forty-three thousand, seven hundred seventy".