99236432439 has 12 divisors (see below), whose sum is σ = 143483589600. Its totient is φ = 66092048064.

The previous prime is 99236432437. The next prime is 99236432441. The reversal of 99236432439 is 93423463299.

It is an interprime number because it is at equal distance from previous prime (99236432437) and next prime (99236432441).

It is not a de Polignac number, because 99236432439 - 2¹ = 99236432437 is a prime.

It is a super-2 number, since 2×99236432439² (a number of 23 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99236432437) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5454879 + ... + 5473040.

It is an arithmetic number, because the mean of its divisors is an integer number (11956965800).

Almost surely, 2^99236432439 is an apocalyptic number.

99236432439 is a deficient number, since it is larger than the sum of its proper divisors (44247157161).

99236432439 is a wasteful number, since it uses less digits than its factorization.

99236432439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10928934 (or 10928931 counting only the distinct ones).

The product of its digits is 7558272, while the sum is 54.

The spelling of 99236432439 in words is "ninety-nine billion, two hundred thirty-six million, four hundred thirty-two thousand, four hundred thirty-nine".