99999013973 has 2 divisors, whose sum is σ = 99999013974. Its totient is φ = 99999013972.

The previous prime is 99999013949. The next prime is 99999014029. The reversal of 99999013973 is 37931099999.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 85765808164 + 14233205809 = 292858^2 + 119303^2 .

It is a cyclic number.

It is not a de Polignac number, because 99999013973 - 2¹⁴ = 99998997589 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (99999010973) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49999506986 + 49999506987.

It is an arithmetic number, because the mean of its divisors is an integer number (49999506987).

Almost surely, 2^99999013973 is an apocalyptic number.

It is an amenable number.

99999013973 is a deficient number, since it is larger than the sum of its proper divisors (1).

99999013973 is an equidigital number, since it uses as much as digits as its factorization.

99999013973 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 33480783, while the sum is 68.

The spelling of 99999013973 in words is "ninety-nine billion, nine hundred ninety-nine million, thirteen thousand, nine hundred seventy-three".