99047621 has 2 divisors, whose sum is σ = 99047622. Its totient is φ = 99047620.

The previous prime is 99047617. The next prime is 99047633. The reversal of 99047621 is 12674099.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 98704225 + 343396 = 9935^2 + 586^2 .

It is an emirp because it is prime and its reverse (12674099) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 99047621 - 2² = 99047617 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (99047651) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49523810 + 49523811.

It is an arithmetic number, because the mean of its divisors is an integer number (49523811).

Almost surely, 2^99047621 is an apocalyptic number.

It is an amenable number.

99047621 is a deficient number, since it is larger than the sum of its proper divisors (1).

99047621 is an equidigital number, since it uses as much as digits as its factorization.

99047621 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 27216, while the sum is 38.

The square root of 99047621 is about 9952.2671286496. The cubic root of 99047621 is about 462.6806633858.

The spelling of 99047621 in words is "ninety-nine million, forty-seven thousand, six hundred twenty-one".