9468139249 has 4 divisors (see below), whose sum is σ = 9472068720. Its totient is φ = 9464209780.

The previous prime is 9468139159. The next prime is 9468139271. The reversal of 9468139249 is 9429318649.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 9429318649 = 103 ⋅91546783.

It is a cyclic number.

It is not a de Polignac number, because 9468139249 - 2¹¹ = 9468137201 is a prime.

It is a super-3 number, since 3×9468139249³ (a number of 31 digits) contains 333 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 9468139249.

It is not an unprimeable number, because it can be changed into a prime (9408139249) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1961119 + ... + 1965940.

It is an arithmetic number, because the mean of its divisors is an integer number (2368017180).

Almost surely, 2^9468139249 is an apocalyptic number.

It is an amenable number.

9468139249 is a deficient number, since it is larger than the sum of its proper divisors (3929471).

9468139249 is a wasteful number, since it uses less digits than its factorization.

9468139249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3929470.

The product of its digits is 3359232, while the sum is 55.

The square root of 9468139249 is about 97304.3639771619. The cubic root of 9468139249 is about 2115.5414820753.

The spelling of 9468139249 in words is "nine billion, four hundred sixty-eight million, one hundred thirty-nine thousand, two hundred forty-nine".