99789433942 has 16 divisors (see below), whose sum is σ = 166059460800. Its totient is φ = 44590039240.

The previous prime is 99789433921. The next prime is 99789433963. The reversal of 99789433942 is 24933498799.

It is an interprime number because it is at equal distance from previous prime (99789433921) and next prime (99789433963).

It is a super-2 number, since 2×99789433942² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38438392 + ... + 38440987.

It is an arithmetic number, because the mean of its divisors is an integer number (10378716300).

Almost surely, 2^99789433942 is an apocalyptic number.

99789433942 is a deficient number, since it is larger than the sum of its proper divisors (66270026858).

99789433942 is a wasteful number, since it uses less digits than its factorization.

99789433942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76879451.

The product of its digits is 105815808, while the sum is 67.

The spelling of 99789433942 in words is "ninety-nine billion, seven hundred eighty-nine million, four hundred thirty-three thousand, nine hundred forty-two".