7951849 has 2 divisors, whose sum is σ = 7951850. Its totient is φ = 7951848.

The previous prime is 7951847. The next prime is 7951897. The reversal of 7951849 is 9481597.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6594624 + 1357225 = 2568^2 + 1165^2 .

It is a cyclic number.

It is not a de Polignac number, because 7951849 - 2¹ = 7951847 is a prime.

Together with 7951847, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (7951847) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3975924 + 3975925.

It is an arithmetic number, because the mean of its divisors is an integer number (3975925).

Almost surely, 2^7951849 is an apocalyptic number.

It is an amenable number.

7951849 is a deficient number, since it is larger than the sum of its proper divisors (1).

7951849 is an equidigital number, since it uses as much as digits as its factorization.

7951849 is an evil number, because the sum of its binary digits is even.

The product of its digits is 90720, while the sum is 43.

The square root of 7951849 is about 2819.9023032722. The cubic root of 7951849 is about 199.5979339227.

The spelling of 7951849 in words is "seven million, nine hundred fifty-one thousand, eight hundred forty-nine".