938773421 has 2 divisors, whose sum is σ = 938773422. Its totient is φ = 938773420.

The previous prime is 938773417. The next prime is 938773427. The reversal of 938773421 is 124377839.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 933302500 + 5470921 = 30550^2 + 2339^2 .

It is a cyclic number.

It is not a de Polignac number, because 938773421 - 2² = 938773417 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (938773427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 469386710 + 469386711.

It is an arithmetic number, because the mean of its divisors is an integer number (469386711).

Almost surely, 2^938773421 is an apocalyptic number.

It is an amenable number.

938773421 is a deficient number, since it is larger than the sum of its proper divisors (1).

938773421 is an equidigital number, since it uses as much as digits as its factorization.

938773421 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 254016, while the sum is 44.

The square root of 938773421 is about 30639.4096059307. The cubic root of 938773421 is about 979.1598453301.

The spelling of 938773421 in words is "nine hundred thirty-eight million, seven hundred seventy-three thousand, four hundred twenty-one".