9138729299 has 8 divisors (see below), whose sum is σ = 10453826400. Its totient is φ = 7826023296.

The previous prime is 9138729293. The next prime is 9138729331. The reversal of 9138729299 is 9929278319.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 9138729299 - 2⁸ = 9138729043 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9138729293) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 589574 + ... + 604875.

It is an arithmetic number, because the mean of its divisors is an integer number (1306728300).

Almost surely, 2^9138729299 is an apocalyptic number.

9138729299 is a deficient number, since it is larger than the sum of its proper divisors (1315097101).

9138729299 is a wasteful number, since it uses less digits than its factorization.

9138729299 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1195549.

The product of its digits is 4408992, while the sum is 59.

The square root of 9138729299 is about 95596.7012976912. The cubic root of 9138729299 is about 2090.7170985407.

The spelling of 9138729299 in words is "nine billion, one hundred thirty-eight million, seven hundred twenty-nine thousand, two hundred ninety-nine".