3979315388 has 24 divisors (see below), whose sum is σ = 7583091600. Its totient is φ = 1819939968.

The previous prime is 3979315387. The next prime is 3979315391. The reversal of 3979315388 is 8835139793.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3979315381) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 900545 + ... + 904952.

It is an arithmetic number, because the mean of its divisors is an integer number (315962150).

Almost surely, 2^3979315388 is an apocalyptic number.

3979315388 is a gapful number since it is divisible by the number (38) formed by its first and last digit.

It is an amenable number.

3979315388 is a deficient number, since it is larger than the sum of its proper divisors (3603776212).

3979315388 is a wasteful number, since it uses less digits than its factorization.

3979315388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1805549 (or 1805547 counting only the distinct ones).

The product of its digits is 4898880, while the sum is 56.

The square root of 3979315388 is about 63081.8150341285. The cubic root of 3979315388 is about 1584.6600906440.

The spelling of 3979315388 in words is "three billion, nine hundred seventy-nine million, three hundred fifteen thousand, three hundred eighty-eight".