7859849 has 2 divisors, whose sum is σ = 7859850. Its totient is φ = 7859848.

The previous prime is 7859809. The next prime is 7859861. The reversal of 7859849 is 9489587.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7661824 + 198025 = 2768^2 + 445^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7859849 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 7859797 and 7859806.

It is not a weakly prime, because it can be changed into another prime (7859809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3929924 + 3929925.

It is an arithmetic number, because the mean of its divisors is an integer number (3929925).

Almost surely, 2^7859849 is an apocalyptic number.

It is an amenable number.

7859849 is a deficient number, since it is larger than the sum of its proper divisors (1).

7859849 is an equidigital number, since it uses as much as digits as its factorization.

7859849 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 725760, while the sum is 50.

The square root of 7859849 is about 2803.5422236877. The cubic root of 7859849 is about 198.8251875912.

The spelling of 7859849 in words is "seven million, eight hundred fifty-nine thousand, eight hundred forty-nine".