7047757249 has 4 divisors (see below), whose sum is σ = 7589892436. Its totient is φ = 6505622064.

The previous prime is 7047757231. The next prime is 7047757253. The reversal of 7047757249 is 9427577407.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 740220849 + 6307536400 = 27207^2 + 79420^2 .

It is a cyclic number.

It is not a de Polignac number, because 7047757249 - 2¹¹ = 7047755201 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 7047757196 and 7047757205.

It is not an unprimeable number, because it can be changed into a prime (7047752249) 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, 271067574 + ... + 271067599.

It is an arithmetic number, because the mean of its divisors is an integer number (1897473109).

Almost surely, 2^7047757249 is an apocalyptic number.

It is an amenable number.

7047757249 is a deficient number, since it is larger than the sum of its proper divisors (542135187).

7047757249 is a wasteful number, since it uses less digits than its factorization.

7047757249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 542135186.

The product of its (nonzero) digits is 3457440, while the sum is 52.

The square root of 7047757249 is about 83950.9216685558. The cubic root of 7047757249 is about 1917.2716283095.

The spelling of 7047757249 in words is "seven billion, forty-seven million, seven hundred fifty-seven thousand, two hundred forty-nine".