99939001 has 2 divisors, whose sum is σ = 99939002. Its totient is φ = 99939000.

The previous prime is 99938989. The next prime is 99939023. The reversal of 99939001 is 10093999.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 90630400 + 9308601 = 9520^2 + 3051^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-99939001 is a prime.

It is not a weakly prime, because it can be changed into another prime (99939041) 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 as a sum of consecutive naturals, namely, 49969500 + 49969501.

It is an arithmetic number, because the mean of its divisors is an integer number (49969501).

Almost surely, 2^99939001 is an apocalyptic number.

It is an amenable number.

99939001 is a deficient number, since it is larger than the sum of its proper divisors (1).

99939001 is an equidigital number, since it uses as much as digits as its factorization.

99939001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 19683, while the sum is 40.

The square root of 99939001 is about 9996.9495847483. The cubic root of 99939001 is about 464.0644867393.

It can be divided in two parts, 999 and 39001, that added together give a square (40000 = 200²).

The spelling of 99939001 in words is "ninety-nine million, nine hundred thirty-nine thousand, one".