5391489665 has 8 divisors (see below), whose sum is σ = 6566352000. Its totient is φ = 4248815472.

The previous prime is 5391489659. The next prime is 5391489671. The reversal of 5391489665 is 5669841935.

It is an interprime number because it is at equal distance from previous prime (5391489659) and next prime (5391489671).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5391489665 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 5391489665.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8046665 + ... + 8047334.

It is an arithmetic number, because the mean of its divisors is an integer number (820794000).

Almost surely, 2^5391489665 is an apocalyptic number.

It is an amenable number.

5391489665 is a deficient number, since it is larger than the sum of its proper divisors (1174862335).

5391489665 is a wasteful number, since it uses less digits than its factorization.

5391489665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16094071.

The product of its digits is 6998400, while the sum is 56.

The square root of 5391489665 is about 73426.7639556586. The cubic root of 5391489665 is about 1753.4885149853.

The spelling of 5391489665 in words is "five billion, three hundred ninety-one million, four hundred eighty-nine thousand, six hundred sixty-five".