79800143 has 2 divisors, whose sum is σ = 79800144. Its totient is φ = 79800142.

The previous prime is 79800121. The next prime is 79800151. The reversal of 79800143 is 34100897.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 79800143 - 2¹² = 79796047 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (79800043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39900071 + 39900072.

It is an arithmetic number, because the mean of its divisors is an integer number (39900072).

Almost surely, 2^79800143 is an apocalyptic number.

79800143 is a deficient number, since it is larger than the sum of its proper divisors (1).

79800143 is an equidigital number, since it uses as much as digits as its factorization.

79800143 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6048, while the sum is 32.

The square root of 79800143 is about 8933.0925776016. The cubic root of 79800143 is about 430.5278230801.

The spelling of 79800143 in words is "seventy-nine million, eight hundred thousand, one hundred forty-three".