2144209797 has 12 divisors (see below), whose sum is σ = 3105283584. Its totient is φ = 1425738600.

The previous prime is 2144209783. The next prime is 2144209811. The reversal of 2144209797 is 7979024412.

It is a happy number.

2144209797 is a `hidden beast` number, since 214 + 420 + 9 + 7 + 9 + 7 = 666.

It is an interprime number because it is at equal distance from previous prime (2144209783) and next prime (2144209811).

It is not a de Polignac number, because 2144209797 - 2⁶ = 2144209733 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2144209097) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 307579 + ... + 314472.

It is an arithmetic number, because the mean of its divisors is an integer number (258773632).

Almost surely, 2^2144209797 is an apocalyptic number.

It is an amenable number.

2144209797 is a deficient number, since it is larger than the sum of its proper divisors (961073787).

2144209797 is a wasteful number, since it uses less digits than its factorization.

2144209797 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 622440 (or 622437 counting only the distinct ones).

The product of its (nonzero) digits is 254016, while the sum is 45.

The square root of 2144209797 is about 46305.6130182940. The cubic root of 2144209797 is about 1289.5032033291.

It can be divided in two parts, 214420979 and 7, that added together give a triangular number (214420986 = T₂₀₇₀₈).

The spelling of 2144209797 in words is "two billion, one hundred forty-four million, two hundred nine thousand, seven hundred ninety-seven".