9139471 has 4 divisors (see below), whose sum is σ = 9970344. Its totient is φ = 8308600.

The previous prime is 9139469. The next prime is 9139483. The reversal of 9139471 is 1749319.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 9139471 - 2¹ = 9139469 is a prime.

It is a super-3 number, since 3×9139471³ (a number of 22 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9139271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 415420 + ... + 415441.

It is an arithmetic number, because the mean of its divisors is an integer number (2492586).

Almost surely, 2^9139471 is an apocalyptic number.

9139471 is a deficient number, since it is larger than the sum of its proper divisors (830873).

9139471 is a wasteful number, since it uses less digits than its factorization.

9139471 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 830872.

The product of its digits is 6804, while the sum is 34.

The square root of 9139471 is about 3023.1558014763. The cubic root of 9139471 is about 209.0773658009.

The spelling of 9139471 in words is "nine million, one hundred thirty-nine thousand, four hundred seventy-one".