2197736439 has 8 divisors (see below), whose sum is σ = 2930875392. Its totient is φ = 1464877560.

The previous prime is 2197736423. The next prime is 2197736449. The reversal of 2197736439 is 9346377912.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2197736439 - 2⁴ = 2197736423 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2197736391 and 2197736400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2197736419) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50967 + ... + 83624.

It is an arithmetic number, because the mean of its divisors is an integer number (366359424).

Almost surely, 2^2197736439 is an apocalyptic number.

2197736439 is a deficient number, since it is larger than the sum of its proper divisors (733138953).

2197736439 is a wasteful number, since it uses less digits than its factorization.

2197736439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140037.

The product of its digits is 1714608, while the sum is 51.

The square root of 2197736439 is about 46880.0217470086. The cubic root of 2197736439 is about 1300.1452380138.

It can be divided in two parts, 2 and 197736439, that added together give a triangular number (197736441 = T₁₉₈₈₆).

The spelling of 2197736439 in words is "two billion, one hundred ninety-seven million, seven hundred thirty-six thousand, four hundred thirty-nine".