99707739 has 4 divisors (see below), whose sum is σ = 132943656. Its totient is φ = 66471824.

The previous prime is 99707731. The next prime is 99707761. The reversal of 99707739 is 93770799.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 99707739 - 2³ = 99707731 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 99707691 and 99707700.

It is not an unprimeable number, because it can be changed into a prime (99707731) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16617954 + ... + 16617959.

It is an arithmetic number, because the mean of its divisors is an integer number (33235914).

Almost surely, 2^99707739 is an apocalyptic number.

99707739 is a deficient number, since it is larger than the sum of its proper divisors (33235917).

99707739 is a wasteful number, since it uses less digits than its factorization.

99707739 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33235916.

The product of its (nonzero) digits is 750141, while the sum is 51.

The square root of 99707739 is about 9985.3762573075. The cubic root of 99707739 is about 463.7062569930.

The spelling of 99707739 in words is "ninety-nine million, seven hundred seven thousand, seven hundred thirty-nine".