38147009 has 2 divisors, whose sum is σ = 38147010. Its totient is φ = 38147008.

The previous prime is 38146991. The next prime is 38147023. The reversal of 38147009 is 90074183.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 38130625 + 16384 = 6175^2 + 128^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-38147009 is a prime.

It is not a weakly prime, because it can be changed into another prime (38147059) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19073504 + 19073505.

It is an arithmetic number, because the mean of its divisors is an integer number (19073505).

Almost surely, 2^38147009 is an apocalyptic number.

It is an amenable number.

38147009 is a deficient number, since it is larger than the sum of its proper divisors (1).

38147009 is an equidigital number, since it uses as much as digits as its factorization.

38147009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6048, while the sum is 32.

The square root of 38147009 is about 6176.3264971988. The cubic root of 38147009 is about 336.6305272234.

The spelling of 38147009 in words is "thirty-eight million, one hundred forty-seven thousand, nine".