99944501 has 2 divisors, whose sum is σ = 99944502. Its totient is φ = 99944500.

The previous prime is 99944491. The next prime is 99944521. The reversal of 99944501 is 10544999.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 97911025 + 2033476 = 9895^2 + 1426^2 .

It is a cyclic number.

It is not a de Polignac number, because 99944501 - 2¹⁴ = 99928117 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (99944521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49972250 + 49972251.

It is an arithmetic number, because the mean of its divisors is an integer number (49972251).

Almost surely, 2^99944501 is an apocalyptic number.

It is an amenable number.

99944501 is a deficient number, since it is larger than the sum of its proper divisors (1).

99944501 is an equidigital number, since it uses as much as digits as its factorization.

99944501 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 58320, while the sum is 41.

The square root of 99944501 is about 9997.2246648757. The cubic root of 99944501 is about 464.0729996249.

The spelling of 99944501 in words is "ninety-nine million, nine hundred forty-four thousand, five hundred one".