99143927 has 2 divisors, whose sum is σ = 99143928. Its totient is φ = 99143926.

The previous prime is 99143917. The next prime is 99143959. The reversal of 99143927 is 72934199.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 99143927 - 2⁴ = 99143911 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (99143917) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49571963 + 49571964.

It is an arithmetic number, because the mean of its divisors is an integer number (49571964).

Almost surely, 2^99143927 is an apocalyptic number.

99143927 is a deficient number, since it is larger than the sum of its proper divisors (1).

99143927 is an equidigital number, since it uses as much as digits as its factorization.

99143927 is an evil number, because the sum of its binary digits is even.

The product of its digits is 122472, while the sum is 44.

The square root of 99143927 is about 9957.1043481526. The cubic root of 99143927 is about 462.8305727240.

The spelling of 99143927 in words is "ninety-nine million, one hundred forty-three thousand, nine hundred twenty-seven".