438027493 has 2 divisors, whose sum is σ = 438027494. Its totient is φ = 438027492.

The previous prime is 438027481. The next prime is 438027529. The reversal of 438027493 is 394720834.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 238455364 + 199572129 = 15442^2 + 14127^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-438027493 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (438027413) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 219013746 + 219013747.

It is an arithmetic number, because the mean of its divisors is an integer number (219013747).

Almost surely, 2^438027493 is an apocalyptic number.

It is an amenable number.

438027493 is a deficient number, since it is larger than the sum of its proper divisors (1).

438027493 is an equidigital number, since it uses as much as digits as its factorization.

438027493 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 145152, while the sum is 40.

The square root of 438027493 is about 20929.1063593265. The cubic root of 438027493 is about 759.4522212743.

The spelling of 438027493 in words is "four hundred thirty-eight million, twenty-seven thousand, four hundred ninety-three".