99533971 has 2 divisors, whose sum is σ = 99533972. Its totient is φ = 99533970.

The previous prime is 99533957. The next prime is 99533983. The reversal of 99533971 is 17933599.

It is a strong prime.

It is an emirp because it is prime and its reverse (17933599) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 99533971 - 2⁷ = 99533843 is a prime.

It is a super-2 number, since 2×99533971² = 19814022766057682, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (99533171) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49766985 + 49766986.

It is an arithmetic number, because the mean of its divisors is an integer number (49766986).

Almost surely, 2^99533971 is an apocalyptic number.

99533971 is a deficient number, since it is larger than the sum of its proper divisors (1).

99533971 is an equidigital number, since it uses as much as digits as its factorization.

99533971 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 229635, while the sum is 46.

The square root of 99533971 is about 9976.6713386780. The cubic root of 99533971 is about 463.4367220355.

It can be divided in two parts, 9953 and 3971, that added together give a square (13924 = 118²).

The spelling of 99533971 in words is "ninety-nine million, five hundred thirty-three thousand, nine hundred seventy-one".