90438343 has 2 divisors, whose sum is σ = 90438344. Its totient is φ = 90438342.

The previous prime is 90438133. The next prime is 90438379. The reversal of 90438343 is 34383409.

It is a strong prime.

It is an emirp because it is prime and its reverse (34383409) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-90438343 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 90438299 and 90438308.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (90438643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45219171 + 45219172.

It is an arithmetic number, because the mean of its divisors is an integer number (45219172).

Almost surely, 2^90438343 is an apocalyptic number.

90438343 is a deficient number, since it is larger than the sum of its proper divisors (1).

90438343 is an equidigital number, since it uses as much as digits as its factorization.

90438343 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 31104, while the sum is 34.

The square root of 90438343 is about 9509.9076231055. The cubic root of 90438343 is about 448.8668494060.

The spelling of 90438343 in words is "ninety million, four hundred thirty-eight thousand, three hundred forty-three".