38455393 has 2 divisors, whose sum is σ = 38455394. Its totient is φ = 38455392.

The previous prime is 38455349. The next prime is 38455397. The reversal of 38455393 is 39355483.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 37859409 + 595984 = 6153^2 + 772^2 .

It is an emirp because it is prime and its reverse (39355483) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 38455393 - 2²¹ = 36358241 is a prime.

It is not a weakly prime, because it can be changed into another prime (38455397) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19227696 + 19227697.

It is an arithmetic number, because the mean of its divisors is an integer number (19227697).

Almost surely, 2^38455393 is an apocalyptic number.

It is an amenable number.

38455393 is a deficient number, since it is larger than the sum of its proper divisors (1).

38455393 is an equidigital number, since it uses as much as digits as its factorization.

38455393 is an evil number, because the sum of its binary digits is even.

The product of its digits is 194400, while the sum is 40.

The square root of 38455393 is about 6201.2412467183. The cubic root of 38455393 is about 337.5352113240.

The spelling of 38455393 in words is "thirty-eight million, four hundred fifty-five thousand, three hundred ninety-three".