38428693 has 2 divisors, whose sum is σ = 38428694. Its totient is φ = 38428692.

The previous prime is 38428669. The next prime is 38428723. The reversal of 38428693 is 39682483.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 33663204 + 4765489 = 5802^2 + 2183^2 .

It is an emirp because it is prime and its reverse (39682483) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 38428693 - 2⁵ = 38428661 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (38425693) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19214346 + 19214347.

It is an arithmetic number, because the mean of its divisors is an integer number (19214347).

Almost surely, 2^38428693 is an apocalyptic number.

It is an amenable number.

38428693 is a deficient number, since it is larger than the sum of its proper divisors (1).

38428693 is an equidigital number, since it uses as much as digits as its factorization.

38428693 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 248832, while the sum is 43.

The square root of 38428693 is about 6199.0880780966. The cubic root of 38428693 is about 337.4570751078.

The spelling of 38428693 in words is "thirty-eight million, four hundred twenty-eight thousand, six hundred ninety-three".