9724214139 has 16 divisors (see below), whose sum is σ = 13065583104. Its totient is φ = 6433020000.

The previous prime is 9724214111. The next prime is 9724214161. The reversal of 9724214139 is 9314124279.

It is a happy number.

It is not a de Polignac number, because 9724214139 - 2²⁰ = 9723165563 is a prime.

It is a super-2 number, since 2×9724214139² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 9724214139.

It is not an unprimeable number, because it can be changed into a prime (9724214179) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 180237 + ... + 227889.

It is an arithmetic number, because the mean of its divisors is an integer number (816598944).

Almost surely, 2^9724214139 is an apocalyptic number.

9724214139 is a deficient number, since it is larger than the sum of its proper divisors (3341368965).

9724214139 is a wasteful number, since it uses less digits than its factorization.

9724214139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48178.

The product of its digits is 108864, while the sum is 42.

The square root of 9724214139 is about 98611.4300626454. The cubic root of 9724214139 is about 2134.4443587661. Note that the first 3 decimals are identical.

The spelling of 9724214139 in words is "nine billion, seven hundred twenty-four million, two hundred fourteen thousand, one hundred thirty-nine".