38434288447 has 2 divisors, whose sum is σ = 38434288448. Its totient is φ = 38434288446.

The previous prime is 38434288433. The next prime is 38434288457. The reversal of 38434288447 is 74488243483.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-38434288447 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (38434288457) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19217144223 + 19217144224.

It is an arithmetic number, because the mean of its divisors is an integer number (19217144224).

Almost surely, 2^38434288447 is an apocalyptic number.

38434288447 is a deficient number, since it is larger than the sum of its proper divisors (1).

38434288447 is an equidigital number, since it uses as much as digits as its factorization.

38434288447 is an evil number, because the sum of its binary digits is even.

The product of its digits is 16515072, while the sum is 55.

The spelling of 38434288447 in words is "thirty-eight billion, four hundred thirty-four million, two hundred eighty-eight thousand, four hundred forty-seven".