144998639 has 2 divisors, whose sum is σ = 144998640. Its totient is φ = 144998638.

The previous prime is 144998621. The next prime is 144998641. The reversal of 144998639 is 936899441.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-144998639 is a prime.

Together with 144998641, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (144998669) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72499319 + 72499320.

It is an arithmetic number, because the mean of its divisors is an integer number (72499320).

Almost surely, 2^144998639 is an apocalyptic number.

144998639 is a deficient number, since it is larger than the sum of its proper divisors (1).

144998639 is an equidigital number, since it uses as much as digits as its factorization.

144998639 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1679616, while the sum is 53.

The square root of 144998639 is about 12041.5380662106. The cubic root of 144998639 is about 525.3571435354.

The spelling of 144998639 in words is "one hundred forty-four million, nine hundred ninety-eight thousand, six hundred thirty-nine".