99790787 has 8 divisors (see below), whose sum is σ = 101237136. Its totient is φ = 98353152.

The previous prime is 99790763. The next prime is 99790811. The reversal of 99790787 is 78709799.

It is an interprime number because it is at equal distance from previous prime (99790763) and next prime (99790811).

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 99790787 - 2¹⁰ = 99789763 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (99790987) 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 7 ways as a sum of consecutive naturals, for example, 22928 + ... + 26930.

It is an arithmetic number, because the mean of its divisors is an integer number (12654642).

Almost surely, 2^99790787 is an apocalyptic number.

99790787 is a gapful number since it is divisible by the number (97) formed by its first and last digit.

99790787 is a deficient number, since it is larger than the sum of its proper divisors (1446349).

99790787 is a wasteful number, since it uses less digits than its factorization.

99790787 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4357.

The product of its (nonzero) digits is 2000376, while the sum is 56.

The square root of 99790787 is about 9989.5338730093. The cubic root of 99790787 is about 463.8349637873.

The spelling of 99790787 in words is "ninety-nine million, seven hundred ninety thousand, seven hundred eighty-seven".