9979860149 has 64 divisors (see below), whose sum is σ = 12889497600. Its totient is φ = 7527168000.

The previous prime is 9979860133. The next prime is 9979860167. The reversal of 9979860149 is 9410689799.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 9979860149 - 2⁴ = 9979860133 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 9979860091 and 9979860100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9979860049) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 39760274 + ... + 39760524.

It is an arithmetic number, because the mean of its divisors is an integer number (201398400).

Almost surely, 2^9979860149 is an apocalyptic number.

It is an amenable number.

9979860149 is a deficient number, since it is larger than the sum of its proper divisors (2909637451).

9979860149 is a wasteful number, since it uses less digits than its factorization.

9979860149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 570.

The product of its (nonzero) digits is 8817984, while the sum is 62.

The square root of 9979860149 is about 99899.2499921796. The cubic root of 9979860149 is about 2152.9873848580.

The spelling of 9979860149 in words is "nine billion, nine hundred seventy-nine million, eight hundred sixty thousand, one hundred forty-nine".