1099999869929 has 2 divisors, whose sum is σ = 1099999869930. Its totient is φ = 1099999869928.

The previous prime is 1099999869919. The next prime is 1099999869949. The reversal of 1099999869929 is 9299689999901.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 904547459929 + 195452410000 = 951077^2 + 442100^2 .

It is a cyclic number.

It is not a de Polignac number, because 1099999869929 - 2²⁴ = 1099983092713 is a prime.

It is not a weakly prime, because it can be changed into another prime (1099999869919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 549999934964 + 549999934965.

It is an arithmetic number, because the mean of its divisors is an integer number (549999934965).

Almost surely, 2^{1099999869929} is an apocalyptic number.

It is an amenable number.

1099999869929 is a deficient number, since it is larger than the sum of its proper divisors (1).

1099999869929 is an equidigital number, since it uses as much as digits as its factorization.

1099999869929 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4132485216, while the sum is 89.

The spelling of 1099999869929 in words is "one trillion, ninety-nine billion, nine hundred ninety-nine million, eight hundred sixty-nine thousand, nine hundred twenty-nine".