438349423 has 2 divisors, whose sum is σ = 438349424. Its totient is φ = 438349422.

The previous prime is 438349391. The next prime is 438349441. The reversal of 438349423 is 324943834.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 438349423 - 2⁵ = 438349391 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (438349463) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 219174711 + 219174712.

It is an arithmetic number, because the mean of its divisors is an integer number (219174712).

Almost surely, 2^438349423 is an apocalyptic number.

438349423 is a deficient number, since it is larger than the sum of its proper divisors (1).

438349423 is an equidigital number, since it uses as much as digits as its factorization.

438349423 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 248832, while the sum is 40.

The square root of 438349423 is about 20936.7959105494. The cubic root of 438349423 is about 759.6382298282.

The spelling of 438349423 in words is "four hundred thirty-eight million, three hundred forty-nine thousand, four hundred twenty-three".