144840947 has 2 divisors, whose sum is σ = 144840948. Its totient is φ = 144840946.

The previous prime is 144840889. The next prime is 144840967. The reversal of 144840947 is 749048441.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 144840947 - 2¹² = 144836851 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (144840967) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72420473 + 72420474.

It is an arithmetic number, because the mean of its divisors is an integer number (72420474).

Almost surely, 2^144840947 is an apocalyptic number.

144840947 is a deficient number, since it is larger than the sum of its proper divisors (1).

144840947 is an equidigital number, since it uses as much as digits as its factorization.

144840947 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 129024, while the sum is 41.

The square root of 144840947 is about 12034.9884503476. The cubic root of 144840947 is about 525.1666252663.

The spelling of 144840947 in words is "one hundred forty-four million, eight hundred forty thousand, nine hundred forty-seven".