99531983 has 2 divisors, whose sum is σ = 99531984. Its totient is φ = 99531982.

The previous prime is 99531967. The next prime is 99532003. The reversal of 99531983 is 38913599.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 99531983 - 2⁴ = 99531967 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (99531083) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49765991 + 49765992.

It is an arithmetic number, because the mean of its divisors is an integer number (49765992).

Almost surely, 2^99531983 is an apocalyptic number.

99531983 is a deficient number, since it is larger than the sum of its proper divisors (1).

99531983 is an equidigital number, since it uses as much as digits as its factorization.

99531983 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 262440, while the sum is 47.

The square root of 99531983 is about 9976.5717057514. The cubic root of 99531983 is about 463.4336365954.

The spelling of 99531983 in words is "ninety-nine million, five hundred thirty-one thousand, nine hundred eighty-three".