9457139 has 4 divisors (see below), whose sum is σ = 9762240. Its totient is φ = 9152040.

The previous prime is 9457127. The next prime is 9457171. The reversal of 9457139 is 9317549.

It is a happy number.

9457139 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9317549 = 211 ⋅44159.

It is a cyclic number.

It is not a de Polignac number, because 9457139 - 2⁸ = 9456883 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9457109) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 152504 + ... + 152565.

It is an arithmetic number, because the mean of its divisors is an integer number (2440560).

Almost surely, 2^9457139 is an apocalyptic number.

9457139 is a deficient number, since it is larger than the sum of its proper divisors (305101).

9457139 is a wasteful number, since it uses less digits than its factorization.

9457139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 305100.

The product of its digits is 34020, while the sum is 38.

The square root of 9457139 is about 3075.2461690083. The cubic root of 9457139 is about 211.4721873608.

The spelling of 9457139 in words is "nine million, four hundred fifty-seven thousand, one hundred thirty-nine".