99143959 has 2 divisors, whose sum is σ = 99143960. Its totient is φ = 99143958.

The previous prime is 99143927. The next prime is 99143963. The reversal of 99143959 is 95934199.

It is a strong prime.

It is an emirp because it is prime and its reverse (95934199) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 99143959 - 2⁵ = 99143927 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (99143909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49571979 + 49571980.

It is an arithmetic number, because the mean of its divisors is an integer number (49571980).

Almost surely, 2^99143959 is an apocalyptic number.

99143959 is a deficient number, since it is larger than the sum of its proper divisors (1).

99143959 is an equidigital number, since it uses as much as digits as its factorization.

99143959 is an evil number, because the sum of its binary digits is even.

The product of its digits is 393660, while the sum is 49.

The square root of 99143959 is about 9957.1059550454. The cubic root of 99143959 is about 462.8306225188.

The spelling of 99143959 in words is "ninety-nine million, one hundred forty-three thousand, nine hundred fifty-nine".