39438239478 has 32 divisors (see below), whose sum is σ = 87670605312. Its totient is φ = 11725490400.

The previous prime is 39438239471. The next prime is 39438239501. The reversal of 39438239478 is 87493283493.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39438239471) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5633758 + ... + 5640753.

It is an arithmetic number, because the mean of its divisors is an integer number (2739706416).

Almost surely, 2^39438239478 is an apocalyptic number.

39438239478 is an abundant number, since it is smaller than the sum of its proper divisors (48232365834).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

39438239478 is a wasteful number, since it uses less digits than its factorization.

39438239478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11274580.

The product of its digits is 31352832, while the sum is 60.

The spelling of 39438239478 in words is "thirty-nine billion, four hundred thirty-eight million, two hundred thirty-nine thousand, four hundred seventy-eight".