144189977 has 2 divisors, whose sum is σ = 144189978. Its totient is φ = 144189976.

The previous prime is 144189973. The next prime is 144190019. The reversal of 144189977 is 779981441.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 110271001 + 33918976 = 10501^2 + 5824^2 .

It is a cyclic number.

It is not a de Polignac number, because 144189977 - 2² = 144189973 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (144189973) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72094988 + 72094989.

It is an arithmetic number, because the mean of its divisors is an integer number (72094989).

Almost surely, 2^144189977 is an apocalyptic number.

It is an amenable number.

144189977 is a deficient number, since it is larger than the sum of its proper divisors (1).

144189977 is an equidigital number, since it uses as much as digits as its factorization.

144189977 is an evil number, because the sum of its binary digits is even.

The product of its digits is 508032, while the sum is 50.

The square root of 144189977 is about 12007.9130992858. The cubic root of 144189977 is about 524.3786778230.

The spelling of 144189977 in words is "one hundred forty-four million, one hundred eighty-nine thousand, nine hundred seventy-seven".