9809906602 has 4 divisors (see below), whose sum is σ = 14714859906. Its totient is φ = 4904953300.

The previous prime is 9809906597. The next prime is 9809906621. The reversal of 9809906602 is 2066099089.

It is a happy number.

9809906602 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2066099089 = 563 ⋅3669803.

It can be written as a sum of positive squares in only one way, i.e., 8139467961 + 1670438641 = 90219^2 + 40871^2 .

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 as a sum of consecutive naturals, namely, 2452476649 + ... + 2452476652.

Almost surely, 2^9809906602 is an apocalyptic number.

9809906602 is a deficient number, since it is larger than the sum of its proper divisors (4904953304).

9809906602 is a wasteful number, since it uses less digits than its factorization.

9809906602 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4904953303.

The product of its (nonzero) digits is 419904, while the sum is 49.

The square root of 9809906602 is about 99044.9726235512. The cubic root of 9809906602 is about 2140.6958026520.

The spelling of 9809906602 in words is "nine billion, eight hundred nine million, nine hundred six thousand, six hundred two".