5438394431 has 2 divisors, whose sum is σ = 5438394432. Its totient is φ = 5438394430.

The previous prime is 5438394373. The next prime is 5438394433. The reversal of 5438394431 is 1344938345.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 5438394431 - 2¹⁰ = 5438393407 is a prime.

It is a super-2 number, since 2×5438394431² = 59152267974263627522, which contains 22 as substring.

Together with 5438394433, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5438394433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2719197215 + 2719197216.

It is an arithmetic number, because the mean of its divisors is an integer number (2719197216).

Almost surely, 2^5438394431 is an apocalyptic number.

5438394431 is a deficient number, since it is larger than the sum of its proper divisors (1).

5438394431 is an equidigital number, since it uses as much as digits as its factorization.

5438394431 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 622080, while the sum is 44.

The square root of 5438394431 is about 73745.4705795549. The cubic root of 5438394431 is about 1758.5588269995.

The spelling of 5438394431 in words is "five billion, four hundred thirty-eight million, three hundred ninety-four thousand, four hundred thirty-one".