38740547 has 2 divisors, whose sum is σ = 38740548. Its totient is φ = 38740546.

The previous prime is 38740523. The next prime is 38740553. The reversal of 38740547 is 74504783.

It is a strong prime.

It is an emirp because it is prime and its reverse (74504783) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 38740547 - 2¹⁰ = 38739523 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 38740547.

It is not a weakly prime, because it can be changed into another prime (38740567) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19370273 + 19370274.

It is an arithmetic number, because the mean of its divisors is an integer number (19370274).

Almost surely, 2^38740547 is an apocalyptic number.

38740547 is a deficient number, since it is larger than the sum of its proper divisors (1).

38740547 is an equidigital number, since it uses as much as digits as its factorization.

38740547 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 94080, while the sum is 38.

The square root of 38740547 is about 6224.1904694506. The cubic root of 38740547 is about 338.3674533982.

The spelling of 38740547 in words is "thirty-eight million, seven hundred forty thousand, five hundred forty-seven".