99943801 has 2 divisors, whose sum is σ = 99943802. Its totient is φ = 99943800.

The previous prime is 99943751. The next prime is 99943841. The reversal of 99943801 is 10834999.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 79477225 + 20466576 = 8915^2 + 4524^2 .

It is a cyclic number.

It is not a de Polignac number, because 99943801 - 2¹⁹ = 99419513 is a prime.

It is not a weakly prime, because it can be changed into another prime (99943841) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49971900 + 49971901.

It is an arithmetic number, because the mean of its divisors is an integer number (49971901).

Almost surely, 2^99943801 is an apocalyptic number.

It is an amenable number.

99943801 is a deficient number, since it is larger than the sum of its proper divisors (1).

99943801 is an equidigital number, since it uses as much as digits as its factorization.

99943801 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 69984, while the sum is 43.

The square root of 99943801 is about 9997.1896550981. The cubic root of 99943801 is about 464.0719161841.

The spelling of 99943801 in words is "ninety-nine million, nine hundred forty-three thousand, eight hundred one".