385977143 has 2 divisors, whose sum is σ = 385977144. Its totient is φ = 385977142.

The previous prime is 385977133. The next prime is 385977149. The reversal of 385977143 is 341779583.

It is a strong prime.

It is an emirp because it is prime and its reverse (341779583) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 385977143 - 2¹⁴ = 385960759 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (385977149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 192988571 + 192988572.

It is an arithmetic number, because the mean of its divisors is an integer number (192988572).

Almost surely, 2^385977143 is an apocalyptic number.

385977143 is a deficient number, since it is larger than the sum of its proper divisors (1).

385977143 is an equidigital number, since it uses as much as digits as its factorization.

385977143 is an evil number, because the sum of its binary digits is even.

The product of its digits is 635040, while the sum is 47.

The square root of 385977143 is about 19646.3010004428. The cubic root of 385977143 is about 728.0935700433.

The spelling of 385977143 in words is "three hundred eighty-five million, nine hundred seventy-seven thousand, one hundred forty-three".