143945377 has 2 divisors, whose sum is σ = 143945378. Its totient is φ = 143945376.

The previous prime is 143945371. The next prime is 143945393. The reversal of 143945377 is 773549341.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 122080401 + 21864976 = 11049^2 + 4676^2 .

It is an emirp because it is prime and its reverse (773549341) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 143945377 - 2²⁷ = 9727649 is a prime.

It is not a weakly prime, because it can be changed into another prime (143945371) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71972688 + 71972689.

It is an arithmetic number, because the mean of its divisors is an integer number (71972689).

Almost surely, 2^143945377 is an apocalyptic number.

It is an amenable number.

143945377 is a deficient number, since it is larger than the sum of its proper divisors (1).

143945377 is an equidigital number, since it uses as much as digits as its factorization.

143945377 is an evil number, because the sum of its binary digits is even.

The product of its digits is 317520, while the sum is 43.

The square root of 143945377 is about 11997.7238257930. The cubic root of 143945377 is about 524.0819960355.

The spelling of 143945377 in words is "one hundred forty-three million, nine hundred forty-five thousand, three hundred seventy-seven".