144838987 has 2 divisors, whose sum is σ = 144838988. Its totient is φ = 144838986.

The previous prime is 144838961. The next prime is 144839011. The reversal of 144838987 is 789838441.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-144838987 is a prime.

It is not a weakly prime, because it can be changed into another prime (144838907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72419493 + 72419494.

It is an arithmetic number, because the mean of its divisors is an integer number (72419494).

Almost surely, 2^144838987 is an apocalyptic number.

144838987 is a deficient number, since it is larger than the sum of its proper divisors (1).

144838987 is an equidigital number, since it uses as much as digits as its factorization.

144838987 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1548288, while the sum is 52.

The square root of 144838987 is about 12034.9070208290. The cubic root of 144838987 is about 525.1642563892.

The spelling of 144838987 in words is "one hundred forty-four million, eight hundred thirty-eight thousand, nine hundred eighty-seven".