7047251989 has 2 divisors, whose sum is σ = 7047251990. Its totient is φ = 7047251988.

The previous prime is 7047251977. The next prime is 7047252059. The reversal of 7047251989 is 9891527407.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5706593764 + 1340658225 = 75542^2 + 36615^2 .

It is a cyclic number.

It is not a de Polignac number, because 7047251989 - 2¹⁷ = 7047120917 is a prime.

It is a super-2 number, since 2×7047251989² = 99327521192928912242, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7047251909) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3523625994 + 3523625995.

It is an arithmetic number, because the mean of its divisors is an integer number (3523625995).

Almost surely, 2^7047251989 is an apocalyptic number.

It is an amenable number.

7047251989 is a deficient number, since it is larger than the sum of its proper divisors (1).

7047251989 is an equidigital number, since it uses as much as digits as its factorization.

7047251989 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1270080, while the sum is 52.

The square root of 7047251989 is about 83947.9123564130. The cubic root of 7047251989 is about 1917.2258102438.

The spelling of 7047251989 in words is "seven billion, forty-seven million, two hundred fifty-one thousand, nine hundred eighty-nine".