2389938769 has 27 divisors (see below), whose sum is σ = 2638116009. Its totient is φ = 2164716360.

The previous prime is 2389938721. The next prime is 2389938773. The reversal of 2389938769 is 9678399832.

It is a happy number.

The square root of 2389938769 is 48887.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 2389938769 - 2¹⁷ = 2389807697 is a prime.

It is a super-2 number, since 2×2389938769² = 11423614639138470722, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2389938769.

It is not an unprimeable number, because it can be changed into a prime (2389938269) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 28794402 + ... + 28794484.

Almost surely, 2^2389938769 is an apocalyptic number.

2389938769 is the 48887-th square number.

2389938769 is the 24444-th centered octagonal number.

It is an amenable number.

2389938769 is a deficient number, since it is larger than the sum of its proper divisors (248177240).

2389938769 is an frugal number, since it uses more digits than its factorization.

2389938769 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 266 (or 133 counting only the distinct ones).

The product of its digits is 35271936, while the sum is 64.

The cubic root of 2389938769 is about 1336.9923575474.

Multiplying 2389938769 by its sum of digits (64), we get a square (152956081216 = 391096²).

The spelling of 2389938769 in words is "two billion, three hundred eighty-nine million, nine hundred thirty-eight thousand, seven hundred sixty-nine".