38289893 has 2 divisors, whose sum is σ = 38289894. Its totient is φ = 38289892.

The previous prime is 38289833. The next prime is 38289919. The reversal of 38289893 is 39898283.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 35307364 + 2982529 = 5942^2 + 1727^2 .

It is an emirp because it is prime and its reverse (39898283) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 38289893 - 2¹⁰ = 38288869 is a prime.

It is a super-2 number, since 2×38289893² = 2932231811902898, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (38289833) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19144946 + 19144947.

It is an arithmetic number, because the mean of its divisors is an integer number (19144947).

Almost surely, 2^38289893 is an apocalyptic number.

It is an amenable number.

38289893 is a deficient number, since it is larger than the sum of its proper divisors (1).

38289893 is an equidigital number, since it uses as much as digits as its factorization.

38289893 is an evil number, because the sum of its binary digits is even.

The product of its digits is 746496, while the sum is 50.

The square root of 38289893 is about 6187.8827558382. The cubic root of 38289893 is about 337.0502996475.

The spelling of 38289893 in words is "thirty-eight million, two hundred eighty-nine thousand, eight hundred ninety-three".