2144020397 has 2 divisors, whose sum is σ = 2144020398. Its totient is φ = 2144020396.

The previous prime is 2144020381. The next prime is 2144020423. The reversal of 2144020397 is 7930204412.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1589935876 + 554084521 = 39874^2 + 23539^2 .

It is a cyclic number.

It is not a de Polignac number, because 2144020397 - 2⁴ = 2144020381 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2144020597) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1072010198 + 1072010199.

It is an arithmetic number, because the mean of its divisors is an integer number (1072010199).

Almost surely, 2^2144020397 is an apocalyptic number.

It is an amenable number.

2144020397 is a deficient number, since it is larger than the sum of its proper divisors (1).

2144020397 is an equidigital number, since it uses as much as digits as its factorization.

2144020397 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12096, while the sum is 32.

The square root of 2144020397 is about 46303.5678646905. The cubic root of 2144020397 is about 1289.4652345478.

The spelling of 2144020397 in words is "two billion, one hundred forty-four million, twenty thousand, three hundred ninety-seven".