38639249471 has 16 divisors (see below), whose sum is σ = 41805603840. Its totient is φ = 35593810560.

The previous prime is 38639249449. The next prime is 38639249503. The reversal of 38639249471 is 17494293683.

It is a cyclic number.

It is not a de Polignac number, because 38639249471 - 2¹⁸ = 38638987327 is a prime.

It is a super-3 number, since 3×38639249471³ (a number of 33 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38639249171) 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 in 15 ways as a sum of consecutive naturals, for example, 76151 + ... + 288231.

It is an arithmetic number, because the mean of its divisors is an integer number (2612850240).

Almost surely, 2^38639249471 is an apocalyptic number.

38639249471 is a deficient number, since it is larger than the sum of its proper divisors (3166354369).

38639249471 is a wasteful number, since it uses less digits than its factorization.

38639249471 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 212366.

The product of its digits is 7838208, while the sum is 56.

The spelling of 38639249471 in words is "thirty-eight billion, six hundred thirty-nine million, two hundred forty-nine thousand, four hundred seventy-one".