2113453439 has 4 divisors (see below), whose sum is σ = 2128658280. Its totient is φ = 2098248600.

The previous prime is 2113453421. The next prime is 2113453451. The reversal of 2113453439 is 9343543112.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2113453439 - 2¹² = 2113449343 is a prime.

It is a super-3 number, since 3×2113453439³ (a number of 29 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2113453399 and 2113453408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2113483439) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7602212 + ... + 7602489.

It is an arithmetic number, because the mean of its divisors is an integer number (532164570).

Almost surely, 2^2113453439 is an apocalyptic number.

2113453439 is a deficient number, since it is larger than the sum of its proper divisors (15204841).

2113453439 is a wasteful number, since it uses less digits than its factorization.

2113453439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15204840.

The product of its digits is 38880, while the sum is 35.

The square root of 2113453439 is about 45972.3116560392. The cubic root of 2113453439 is about 1283.3079798818.

The spelling of 2113453439 in words is "two billion, one hundred thirteen million, four hundred fifty-three thousand, four hundred thirty-nine".