9142389 has 14 divisors (see below), whose sum is σ = 13708406. Its totient is φ = 6094440.

The previous prime is 9142373. The next prime is 9142391. The reversal of 9142389 is 9832419.

It can be written as a sum of positive squares in only one way, i.e., 8820900 + 321489 = 2970^2 + 567^2 .

It is not a de Polignac number, because 9142389 - 2⁴ = 9142373 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9142369) by changing a digit.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 5542 + ... + 6999.

Almost surely, 2^9142389 is an apocalyptic number.

It is an amenable number.

9142389 is a deficient number, since it is larger than the sum of its proper divisors (4566017).

9142389 is an equidigital number, since it uses as much as digits as its factorization.

9142389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12559 (or 12544 counting only the distinct ones).

The product of its digits is 15552, while the sum is 36.

The square root of 9142389 is about 3023.6383712342. The cubic root of 9142389 is about 209.0996144568.

The spelling of 9142389 in words is "nine million, one hundred forty-two thousand, three hundred eighty-nine".