99387870296399 has 4 divisors (see below), whose sum is σ = 99390128283264. Its totient is φ = 99385612309536.

The previous prime is 99387870296291. The next prime is 99387870296411. The reversal of 99387870296399 is 99369207878399.

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

It is a cyclic number.

It is not a de Polignac number, because 99387870296399 - 2¹² = 99387870292303 is a prime.

It is a super-2 number, since 2×99387870296399² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99387870296699) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1128927407 + ... + 1129015440.

It is an arithmetic number, because the mean of its divisors is an integer number (24847532070816).

Almost surely, 2^{99387870296399} is an apocalyptic number.

99387870296399 is a deficient number, since it is larger than the sum of its proper divisors (2257986865).

99387870296399 is a wasteful number, since it uses less digits than its factorization.

99387870296399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2257986864.

The product of its (nonzero) digits is 19999187712, while the sum is 89.

The spelling of 99387870296399 in words is "ninety-nine trillion, three hundred eighty-seven billion, eight hundred seventy million, two hundred ninety-six thousand, three hundred ninety-nine".