4397893649 has 2 divisors, whose sum is σ = 4397893650. Its totient is φ = 4397893648.

The previous prime is 4397893613. The next prime is 4397893657. The reversal of 4397893649 is 9463987934.

4397893649 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4268662225 + 129231424 = 65335^2 + 11368^2 .

It is a cyclic number.

It is not a de Polignac number, because 4397893649 - 2¹² = 4397889553 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 4397893591 and 4397893600.

It is not a weakly prime, because it can be changed into another prime (4397893609) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2198946824 + 2198946825.

It is an arithmetic number, because the mean of its divisors is an integer number (2198946825).

Almost surely, 2^4397893649 is an apocalyptic number.

It is an amenable number.

4397893649 is a deficient number, since it is larger than the sum of its proper divisors (1).

4397893649 is an equidigital number, since it uses as much as digits as its factorization.

4397893649 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 35271936, while the sum is 62.

The square root of 4397893649 is about 66316.6166884289. The cubic root of 4397893649 is about 1638.3810179230.

The spelling of 4397893649 in words is "four billion, three hundred ninety-seven million, eight hundred ninety-three thousand, six hundred forty-nine".