5120404249 has 9 divisors (see below), whose sum is σ = 5163773013. Its totient is φ = 5077398492.

The previous prime is 5120404241. The next prime is 5120404271. The reversal of 5120404249 is 9424040215.

The square root of 5120404249 is 71557.

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

It is not a de Polignac number, because 5120404249 - 2³ = 5120404241 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 5120404249.

It is not an unprimeable number, because it can be changed into a prime (5120404241) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 11663572 + ... + 11664010.

It is an arithmetic number, because the mean of its divisors is an integer number (573752557).

Almost surely, 2^5120404249 is an apocalyptic number.

5120404249 is the 71557-th square number.

5120404249 is the 35779-th centered octagonal number.

It is an amenable number.

5120404249 is a deficient number, since it is larger than the sum of its proper divisors (43368764).

5120404249 is an frugal number, since it uses more digits than its factorization.

5120404249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1204 (or 602 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 31.

The cubic root of 5120404249 is about 1723.5931116687.

The spelling of 5120404249 in words is "five billion, one hundred twenty million, four hundred four thousand, two hundred forty-nine".