38749237 has 2 divisors, whose sum is σ = 38749238. Its totient is φ = 38749236.

The previous prime is 38749219. The next prime is 38749241. The reversal of 38749237 is 73294783.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 28451556 + 10297681 = 5334^2 + 3209^2 .

It is an emirp because it is prime and its reverse (73294783) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-38749237 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 38749193 and 38749202.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (38749247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19374618 + 19374619.

It is an arithmetic number, because the mean of its divisors is an integer number (19374619).

Almost surely, 2^38749237 is an apocalyptic number.

It is an amenable number.

38749237 is a deficient number, since it is larger than the sum of its proper divisors (1).

38749237 is an equidigital number, since it uses as much as digits as its factorization.

38749237 is an evil number, because the sum of its binary digits is even.

The product of its digits is 254016, while the sum is 43.

The square root of 38749237 is about 6224.8885130579. Note that the first 3 decimals coincide. The cubic root of 38749237 is about 338.3927515554.

The spelling of 38749237 in words is "thirty-eight million, seven hundred forty-nine thousand, two hundred thirty-seven".