438334973 has 2 divisors, whose sum is σ = 438334974. Its totient is φ = 438334972.

The previous prime is 438334961. The next prime is 438335011. The reversal of 438334973 is 379433834.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 433763929 + 4571044 = 20827^2 + 2138^2 .

It is a cyclic number.

It is not a de Polignac number, because 438334973 - 2⁶ = 438334909 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (438334933) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 219167486 + 219167487.

It is an arithmetic number, because the mean of its divisors is an integer number (219167487).

Almost surely, 2^438334973 is an apocalyptic number.

It is an amenable number.

438334973 is a deficient number, since it is larger than the sum of its proper divisors (1).

438334973 is an equidigital number, since it uses as much as digits as its factorization.

438334973 is an evil number, because the sum of its binary digits is even.

The product of its digits is 653184, while the sum is 44.

The square root of 438334973 is about 20936.4508214740. The cubic root of 438334973 is about 759.6298826874.

The spelling of 438334973 in words is "four hundred thirty-eight million, three hundred thirty-four thousand, nine hundred seventy-three".