99543967 has 2 divisors, whose sum is σ = 99543968. Its totient is φ = 99543966.

The previous prime is 99543953. The next prime is 99544001. The reversal of 99543967 is 76934599.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 99543967 - 2²³ = 91155359 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (99573967) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49771983 + 49771984.

It is an arithmetic number, because the mean of its divisors is an integer number (49771984).

Almost surely, 2^99543967 is an apocalyptic number.

99543967 is a deficient number, since it is larger than the sum of its proper divisors (1).

99543967 is an equidigital number, since it uses as much as digits as its factorization.

99543967 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1837080, while the sum is 52.

The square root of 99543967 is about 9977.1722947938. The cubic root of 99543967 is about 463.4522355276.

The spelling of 99543967 in words is "ninety-nine million, five hundred forty-three thousand, nine hundred sixty-seven".