79578143 has 2 divisors, whose sum is σ = 79578144. Its totient is φ = 79578142.

The previous prime is 79578133. The next prime is 79578167. The reversal of 79578143 is 34187597.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 79578143 - 2⁴ = 79578127 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 79578094 and 79578103.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (79578113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39789071 + 39789072.

It is an arithmetic number, because the mean of its divisors is an integer number (39789072).

Almost surely, 2^79578143 is an apocalyptic number.

79578143 is a deficient number, since it is larger than the sum of its proper divisors (1).

79578143 is an equidigital number, since it uses as much as digits as its factorization.

79578143 is an evil number, because the sum of its binary digits is even.

The product of its digits is 211680, while the sum is 44.

The square root of 79578143 is about 8920.6582156251. The cubic root of 79578143 is about 430.1282166773.

The spelling of 79578143 in words is "seventy-nine million, five hundred seventy-eight thousand, one hundred forty-three".