99790719829 has 4 divisors (see below), whose sum is σ = 100778746860. Its totient is φ = 98802692800.

The previous prime is 99790719817. The next prime is 99790719841. The reversal of 99790719829 is 92891709799.

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

It is an interprime number because it is at equal distance from previous prime (99790719817) and next prime (99790719841).

It can be written as a sum of positive squares in 2 ways, for example, as 91628500804 + 8162219025 = 302702^2 + 90345^2 .

It is a cyclic number.

It is not a de Polignac number, because 99790719829 - 2⁷ = 99790719701 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 (99790719629) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 494013364 + ... + 494013565.

It is an arithmetic number, because the mean of its divisors is an integer number (25194686715).

Almost surely, 2^99790719829 is an apocalyptic number.

It is an amenable number.

99790719829 is a deficient number, since it is larger than the sum of its proper divisors (988027031).

99790719829 is a wasteful number, since it uses less digits than its factorization.

99790719829 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 988027030.

The product of its (nonzero) digits is 46294416, while the sum is 70.

The spelling of 99790719829 in words is "ninety-nine billion, seven hundred ninety million, seven hundred nineteen thousand, eight hundred twenty-nine".