2399870453 has 6 divisors (see below), whose sum is σ = 2430639414. Its totient is φ = 2369486184.

The previous prime is 2399870441. The next prime is 2399870477. The reversal of 2399870453 is 3540789932.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 2375880049 + 23990404 = 48743^2 + 4898^2 .

It is not a de Polignac number, because 2399870453 - 2⁸ = 2399870197 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2399870483) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 186026 + ... + 198507.

It is an arithmetic number, because the mean of its divisors is an integer number (405106569).

Almost surely, 2^2399870453 is an apocalyptic number.

It is an amenable number.

2399870453 is a deficient number, since it is larger than the sum of its proper divisors (30768961).

2399870453 is an frugal number, since it uses more digits than its factorization.

2399870453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 384691 (or 384612 counting only the distinct ones).

The product of its (nonzero) digits is 1632960, while the sum is 50.

The square root of 2399870453 is about 48988.4726542888. The cubic root of 2399870453 is about 1338.8418100002.

The spelling of 2399870453 in words is "two billion, three hundred ninety-nine million, eight hundred seventy thousand, four hundred fifty-three".