9378431 has 2 divisors, whose sum is σ = 9378432. Its totient is φ = 9378430.

The previous prime is 9378409. The next prime is 9378437. The reversal of 9378431 is 1348739.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 9378431 - 2⁶ = 9378367 is a prime.

It is a super-2 number, since 2×9378431² = 175909936043522, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 9378391 and 9378400.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9378437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4689215 + 4689216.

It is an arithmetic number, because the mean of its divisors is an integer number (4689216).

Almost surely, 2^9378431 is an apocalyptic number.

9378431 is a deficient number, since it is larger than the sum of its proper divisors (1).

9378431 is an equidigital number, since it uses as much as digits as its factorization.

9378431 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 18144, while the sum is 35.

The square root of 9378431 is about 3062.4224071803. The cubic root of 9378431 is about 210.8838860101.

The spelling of 9378431 in words is "nine million, three hundred seventy-eight thousand, four hundred thirty-one".