99983761 has 2 divisors, whose sum is σ = 99983762. Its totient is φ = 99983760.

The previous prime is 99983759. The next prime is 99983797. The reversal of 99983761 is 16738999.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 65691025 + 34292736 = 8105^2 + 5856^2 .

It is a cyclic number.

It is not a de Polignac number, because 99983761 - 2¹ = 99983759 is a prime.

Together with 99983759, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 99983699 and 99983708.

It is not a weakly prime, because it can be changed into another prime (99983861) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49991880 + 49991881.

It is an arithmetic number, because the mean of its divisors is an integer number (49991881).

Almost surely, 2^99983761 is an apocalyptic number.

It is an amenable number.

99983761 is a deficient number, since it is larger than the sum of its proper divisors (1).

99983761 is an equidigital number, since it uses as much as digits as its factorization.

99983761 is an evil number, because the sum of its binary digits is even.

The product of its digits is 734832, while the sum is 52.

The square root of 99983761 is about 9999.1880170342. The cubic root of 99983761 is about 464.1337570808.

The spelling of 99983761 in words is "ninety-nine million, nine hundred eighty-three thousand, seven hundred sixty-one".