99621803 has 2 divisors, whose sum is σ = 99621804. Its totient is φ = 99621802.

The previous prime is 99621793. The next prime is 99621827. The reversal of 99621803 is 30812699.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 99621803 - 2⁴ = 99621787 is a prime.

It is not a weakly prime, because it can be changed into another prime (99623803) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49810901 + 49810902.

It is an arithmetic number, because the mean of its divisors is an integer number (49810902).

Almost surely, 2^99621803 is an apocalyptic number.

99621803 is a deficient number, since it is larger than the sum of its proper divisors (1).

99621803 is an equidigital number, since it uses as much as digits as its factorization.

99621803 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 23328, while the sum is 38.

The square root of 99621803 is about 9981.0722369894. The cubic root of 99621803 is about 463.5729991498.

The spelling of 99621803 in words is "ninety-nine million, six hundred twenty-one thousand, eight hundred three".