143977 has 2 divisors, whose sum is σ = 143978. Its totient is φ = 143976.

The previous prime is 143971. The next prime is 143981. The reversal of 143977 is 779341.

143977 is nontrivially palindromic in base 11.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 141376 + 2601 = 376^2 + 51^2 .

It is an emirp because it is prime and its reverse (779341) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-143977 is a prime.

It is a super-3 number, since 3×143977³ = 8953660333547499, which contains 333 as substring.

143977 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (143971) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71988 + 71989.

It is an arithmetic number, because the mean of its divisors is an integer number (71989).

2¹⁴³⁹⁷⁷ is an apocalyptic number.

It is an amenable number.

143977 is a deficient number, since it is larger than the sum of its proper divisors (1).

143977 is an equidigital number, since it uses as much as digits as its factorization.

143977 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 143977 is about 379.4430128491. The cubic root of 143977 is about 52.4120371313.

The spelling of 143977 in words is "one hundred forty-three thousand, nine hundred seventy-seven".