99489660 has 24 divisors (see below), whose sum is σ = 278571216. Its totient is φ = 26530560.

The previous prime is 99489613. The next prime is 99489671. The reversal of 99489660 is 6698499.

99489660 = 3523² + 3524² + ... + 3530².

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 829021 + ... + 829140.

It is an arithmetic number, because the mean of its divisors is an integer number (11607134).

Almost surely, 2^99489660 is an apocalyptic number.

It is an amenable number.

99489660 is an abundant number, since it is smaller than the sum of its proper divisors (179081556).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

99489660 is a wasteful number, since it uses less digits than its factorization.

99489660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1658173 (or 1658171 counting only the distinct ones).

The product of its (nonzero) digits is 839808, while the sum is 51.

The square root of 99489660 is about 9974.4503607968. The cubic root of 99489660 is about 463.3679401832.

The spelling of 99489660 in words is "ninety-nine million, four hundred eighty-nine thousand, six hundred sixty".