4398864491 has 16 divisors (see below), whose sum is σ = 5096064000. Its totient is φ = 3718960128.

The previous prime is 4398864487. The next prime is 4398864497. The reversal of 4398864491 is 1944688934.

It is a cyclic number.

It is not a de Polignac number, because 4398864491 - 2² = 4398864487 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4398864497) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 634160 + ... + 641058.

It is an arithmetic number, because the mean of its divisors is an integer number (318504000).

Almost surely, 2^4398864491 is an apocalyptic number.

4398864491 is a deficient number, since it is larger than the sum of its proper divisors (697199509).

4398864491 is a wasteful number, since it uses less digits than its factorization.

4398864491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8138.

The product of its digits is 5971968, while the sum is 56.

The square root of 4398864491 is about 66323.9360336824. The cubic root of 4398864491 is about 1638.5015674559.

The spelling of 4398864491 in words is "four billion, three hundred ninety-eight million, eight hundred sixty-four thousand, four hundred ninety-one".