90799709 has 16 divisors (see below), whose sum is σ = 121914240. Its totient is φ = 65309760.

The previous prime is 90799697. The next prime is 90799711.

90799709 is nontrivially palindromic in base 10.

It is a cyclic number.

It is not a de Polignac number, because 90799709 - 2⁴ = 90799693 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90799799) 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 15 ways as a sum of consecutive naturals, for example, 44354 + ... + 46355.

It is an arithmetic number, because the mean of its divisors is an integer number (7619640).

Almost surely, 2^90799709 is an apocalyptic number.

It is an amenable number.

90799709 is a deficient number, since it is larger than the sum of its proper divisors (31114531).

90799709 is a wasteful number, since it uses less digits than its factorization.

90799709 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90740.

The product of its (nonzero) digits is 321489, while the sum is 50.

The square root of 90799709 is about 9528.8881303120. Note that the first 3 decimals coincide. The cubic root of 90799709 is about 449.4639031511.

The spelling of 90799709 in words is "ninety million, seven hundred ninety-nine thousand, seven hundred nine".