4398658961 has 2 divisors, whose sum is σ = 4398658962. Its totient is φ = 4398658960.

The previous prime is 4398658879. The next prime is 4398659017. The reversal of 4398658961 is 1698568934.

4398658961 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., 3542511361 + 856147600 = 59519^2 + 29260^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4398658961 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 4398658961.

It is not a weakly prime, because it can be changed into another prime (4398658261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2199329480 + 2199329481.

It is an arithmetic number, because the mean of its divisors is an integer number (2199329481).

Almost surely, 2^4398658961 is an apocalyptic number.

It is an amenable number.

4398658961 is a deficient number, since it is larger than the sum of its proper divisors (1).

4398658961 is an equidigital number, since it uses as much as digits as its factorization.

4398658961 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11197440, while the sum is 59.

The square root of 4398658961 is about 66322.3865749718. The cubic root of 4398658961 is about 1638.4760482586.

The spelling of 4398658961 in words is "four billion, three hundred ninety-eight million, six hundred fifty-eight thousand, nine hundred sixty-one".