9139755808 has 12 divisors (see below), whose sum is σ = 17993894310. Its totient is φ = 4569877888.

The previous prime is 9139755803. The next prime is 9139755841. The reversal of 9139755808 is 8085579319.

It can be written as a sum of positive squares in only one way, i.e., 8803693584 + 336062224 = 93828^2 + 18332^2 .

It is not an unprimeable number, because it can be changed into a prime (9139755803) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 142808653 + ... + 142808716.

Almost surely, 2^9139755808 is an apocalyptic number.

It is an amenable number.

9139755808 is a deficient number, since it is larger than the sum of its proper divisors (8854138502).

9139755808 is a wasteful number, since it uses less digits than its factorization.

9139755808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 285617379 (or 285617371 counting only the distinct ones).

The product of its (nonzero) digits is 2721600, while the sum is 55.

The square root of 9139755808 is about 95602.0701031102. The cubic root of 9139755808 is about 2090.7953756366.

The spelling of 9139755808 in words is "nine billion, one hundred thirty-nine million, seven hundred fifty-five thousand, eight hundred eight".