38393440471 has 2 divisors, whose sum is σ = 38393440472. Its totient is φ = 38393440470.

The previous prime is 38393440439. The next prime is 38393440571. The reversal of 38393440471 is 17404439383.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 38393440471 - 2⁵ = 38393440439 is a prime.

It is a super-3 number, since 3×38393440471³ (a number of 33 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (38393440571) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19196720235 + 19196720236.

It is an arithmetic number, because the mean of its divisors is an integer number (19196720236).

Almost surely, 2^38393440471 is an apocalyptic number.

38393440471 is a deficient number, since it is larger than the sum of its proper divisors (1).

38393440471 is an equidigital number, since it uses as much as digits as its factorization.

38393440471 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 870912, while the sum is 46.

It can be divided in two parts, 38393 and 440471, that added together give a square (478864 = 692²).

The spelling of 38393440471 in words is "thirty-eight billion, three hundred ninety-three million, four hundred forty thousand, four hundred seventy-one".