99439535249 has 8 divisors (see below), whose sum is σ = 99970910208. Its totient is φ = 98908272640.

The previous prime is 99439535213. The next prime is 99439535263. The reversal of 99439535249 is 94253593499.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 99439535249 - 2⁸ = 99439534993 is a prime.

It is a super-2 number, since 2×99439535249² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 99439535191 and 99439535200.

It is not an unprimeable number, because it can be changed into a prime (99439535549) 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, 2227304 + ... + 2271510.

It is an arithmetic number, because the mean of its divisors is an integer number (12496363776).

Almost surely, 2^99439535249 is an apocalyptic number.

It is an amenable number.

99439535249 is a deficient number, since it is larger than the sum of its proper divisors (531374959).

99439535249 is a wasteful number, since it uses less digits than its factorization.

99439535249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56175.

The product of its digits is 47239200, while the sum is 62.

The spelling of 99439535249 in words is "ninety-nine billion, four hundred thirty-nine million, five hundred thirty-five thousand, two hundred forty-nine".