99709061 has 4 divisors (see below), whose sum is σ = 100097292. Its totient is φ = 99320832.

The previous prime is 99709039. The next prime is 99709073. The reversal of 99709061 is 16090799.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 98386561 + 1322500 = 9919^2 + 1150^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-99709061 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99709031) 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 3 ways as a sum of consecutive naturals, for example, 193730 + ... + 194243.

It is an arithmetic number, because the mean of its divisors is an integer number (25024323).

Almost surely, 2^99709061 is an apocalyptic number.

It is an amenable number.

99709061 is a deficient number, since it is larger than the sum of its proper divisors (388231).

99709061 is a wasteful number, since it uses less digits than its factorization.

99709061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 388230.

The product of its (nonzero) digits is 30618, while the sum is 41.

The square root of 99709061 is about 9985.4424538926. The cubic root of 99709061 is about 463.7083063724.

The spelling of 99709061 in words is "ninety-nine million, seven hundred nine thousand, sixty-one".