99444551 has 2 divisors, whose sum is σ = 99444552. Its totient is φ = 99444550.

The previous prime is 99444539. The next prime is 99444563. The reversal of 99444551 is 15544499.

It is a balanced prime because it is at equal distance from previous prime (99444539) and next prime (99444563).

It is an emirp because it is prime and its reverse (15544499) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 99444551 - 2⁶ = 99444487 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 99444499 and 99444508.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (99443551) 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, 49722275 + 49722276.

It is an arithmetic number, because the mean of its divisors is an integer number (49722276).

Almost surely, 2^99444551 is an apocalyptic number.

99444551 is a deficient number, since it is larger than the sum of its proper divisors (1).

99444551 is an equidigital number, since it uses as much as digits as its factorization.

99444551 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 129600, while the sum is 41.

The square root of 99444551 is about 9972.1888770721. The cubic root of 99444551 is about 463.2978986525.

The spelling of 99444551 in words is "ninety-nine million, four hundred forty-four thousand, five hundred fifty-one".