9490398664 has 8 divisors (see below), whose sum is σ = 17794497510. Its totient is φ = 4745199328.

The previous prime is 9490398661. The next prime is 9490398689. The reversal of 9490398664 is 4668930949.

It can be written as a sum of positive squares in only one way, i.e., 7933464900 + 1556933764 = 89070^2 + 39458^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 9490398599 and 9490398608.

It is not an unprimeable number, because it can be changed into a prime (9490398661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 593149909 + ... + 593149924.

Almost surely, 2^9490398664 is an apocalyptic number.

It is an amenable number.

9490398664 is a deficient number, since it is larger than the sum of its proper divisors (8304098846).

9490398664 is a wasteful number, since it uses less digits than its factorization.

9490398664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1186299839 (or 1186299835 counting only the distinct ones).

The product of its (nonzero) digits is 10077696, while the sum is 58.

The square root of 9490398664 is about 97418.6771825608. The cubic root of 9490398664 is about 2117.1980504731.

The spelling of 9490398664 in words is "nine billion, four hundred ninety million, three hundred ninety-eight thousand, six hundred sixty-four".