38749147 has 2 divisors, whose sum is σ = 38749148.
Its totient is φ = 38749146.
The previous prime is 38749111. The next prime is 38749159. The reversal of 38749147 is 74194783.
It is a strong prime.
It is a cyclic number.
It is not a de Polignac number, because 38749147 - 27 = 38749019 is a prime.
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, 19374573 + 19374574.
It is an arithmetic number, because the mean of its divisors is an integer number (19374574).
Almost surely, 238749147 is an apocalyptic number.
38749147 is a deficient number, since it is larger than the sum of its proper divisors (1).
38749147 is an equidigital number, since it uses as much as digits as its factorization.
38749147 is an odious number, because the sum of its binary digits is odd.
The product of its digits is 169344, while the sum is 43.
The square root of 38749147 is about 6224.8812840086.
The cubic root of 38749147 is about 338.3924895685.
The spelling of 38749147 in words is "thirty-eight million, seven hundred forty-nine thousand, one hundred forty-seven".