9139406 has 4 divisors (see below), whose sum is σ = 13709112. Its totient is φ = 4569702.

The previous prime is 9139397. The next prime is 9139439. The reversal of 9139406 is 6049319.

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

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 2284850 + ... + 2284853.

It is an arithmetic number, because the mean of its divisors is an integer number (3427278).

Almost surely, 2^9139406 is an apocalyptic number.

9139406 is a deficient number, since it is larger than the sum of its proper divisors (4569706).

9139406 is a wasteful number, since it uses less digits than its factorization.

9139406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4569705.

The product of its (nonzero) digits is 5832, while the sum is 32.

The square root of 9139406 is about 3023.1450511016. The cubic root of 9139406 is about 209.0768701464.

The spelling of 9139406 in words is "nine million, one hundred thirty-nine thousand, four hundred six".