30999588489 has 21 divisors (see below), whose sum is σ = 46485249559. Its totient is φ = 20663223120.

The previous prime is 30999588469. The next prime is 30999588497. The reversal of 30999588489 is 98488599903.

It is a happy number.

The square root of 30999588489 is 176067.

It is a perfect power (a square), and thus also a powerful number.

30999588489 is a `hidden beast` number, since 3 + 0 + 9 + 99 + 58 + 8 + 489 = 666.

It can be written as a sum of positive squares in only one way, i.e., 28741438089 + 2258150400 = 169533^2 + 47520^2 .

It is not a de Polignac number, because 30999588489 - 2⁹ = 30999587977 is a prime.

It is a super-3 number, since 3×30999588489³ (a number of 32 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30999588419) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 20 ways as a sum of consecutive naturals, for example, 4750549 + ... + 4757069.

Almost surely, 2^30999588489 is an apocalyptic number.

30999588489 is the 176067-th square number.

30999588489 is the 88034-th centered octagonal number.

It is an amenable number.

30999588489 is a deficient number, since it is larger than the sum of its proper divisors (15485661070).

30999588489 is an frugal number, since it uses more digits than its factorization.

30999588489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13060 (or 6524 counting only the distinct ones).

The product of its (nonzero) digits is 201553920, while the sum is 72.

The spelling of 30999588489 in words is "thirty billion, nine hundred ninety-nine million, five hundred eighty-eight thousand, four hundred eighty-nine".