9138771 has 8 divisors (see below), whose sum is σ = 13538960. Its totient is φ = 6092496.

The previous prime is 9138757. The next prime is 9138803. The reversal of 9138771 is 1778319.

9138771 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 9138771 - 2⁵ = 9138739 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9138721) 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, 169210 + ... + 169263.

It is an arithmetic number, because the mean of its divisors is an integer number (1692370).

Almost surely, 2^9138771 is an apocalyptic number.

9138771 is a deficient number, since it is larger than the sum of its proper divisors (4400189).

9138771 is a wasteful number, since it uses less digits than its factorization.

9138771 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 338482 (or 338476 counting only the distinct ones).

The product of its digits is 10584, while the sum is 36.

The square root of 9138771 is about 3023.0400261988. The cubic root of 9138771 is about 209.0720278591.

The spelling of 9138771 in words is "nine million, one hundred thirty-eight thousand, seven hundred seventy-one".