143779 has 2 divisors, whose sum is σ = 143780. Its totient is φ = 143778.

The previous prime is 143743. The next prime is 143791. The reversal of 143779 is 977341.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 143779 - 2⁷ = 143651 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 143779.

It is not a weakly prime, because it can be changed into another prime (143719) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71889 + 71890.

It is an arithmetic number, because the mean of its divisors is an integer number (71890).

2¹⁴³⁷⁷⁹ is an apocalyptic number.

143779 is a deficient number, since it is larger than the sum of its proper divisors (1).

143779 is an equidigital number, since it uses as much as digits as its factorization.

143779 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5292, while the sum is 31.

The square root of 143779 is about 379.1820143414. The cubic root of 143779 is about 52.3880000880.

The spelling of 143779 in words is "one hundred forty-three thousand, seven hundred seventy-nine".