39130128392 has 8 divisors (see below), whose sum is σ = 73368990750. Its totient is φ = 19565064192.

The previous prime is 39130128353. The next prime is 39130128397. The reversal of 39130128392 is 29382103193.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 36593394436 + 2536733956 = 191294^2 + 50366^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (39130128397) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2445633017 + ... + 2445633032.

Almost surely, 2^39130128392 is an apocalyptic number.

It is an amenable number.

39130128392 is a deficient number, since it is larger than the sum of its proper divisors (34238862358).

39130128392 is a wasteful number, since it uses less digits than its factorization.

39130128392 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4891266055 (or 4891266051 counting only the distinct ones).

The product of its (nonzero) digits is 69984, while the sum is 41.

The spelling of 39130128392 in words is "thirty-nine billion, one hundred thirty million, one hundred twenty-eight thousand, three hundred ninety-two".