9139481 has 8 divisors (see below), whose sum is σ = 10109064. Its totient is φ = 8208000.

The previous prime is 9139469. The next prime is 9139483. The reversal of 9139481 is 1849319.

9139481 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 490000 + 8649481 = 700^2 + 2941^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9139481 is a prime.

It is a super-2 number, since 2×9139481² = 167060225898722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9139483) 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, 9020 + ... + 9981.

It is an arithmetic number, because the mean of its divisors is an integer number (1263633).

Almost surely, 2^9139481 is an apocalyptic number.

It is an amenable number.

9139481 is a deficient number, since it is larger than the sum of its proper divisors (969583).

9139481 is a wasteful number, since it uses less digits than its factorization.

9139481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19051.

The product of its digits is 7776, while the sum is 35.

The square root of 9139481 is about 3023.1574553767. The cubic root of 9139481 is about 209.0774420552.

The spelling of 9139481 in words is "nine million, one hundred thirty-nine thousand, four hundred eighty-one".