3939396380 has 12 divisors (see below), whose sum is σ = 8272732440. Its totient is φ = 1575758544.

The previous prime is 3939396371. The next prime is 3939396389. The reversal of 3939396380 is 836939393.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (3939396371) and next prime (3939396389).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3939396389) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 98484890 + ... + 98484929.

It is an arithmetic number, because the mean of its divisors is an integer number (689394370).

Almost surely, 2^3939396380 is an apocalyptic number.

It is an amenable number.

3939396380 is an abundant number, since it is smaller than the sum of its proper divisors (4333336060).

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

3939396380 is a wasteful number, since it uses less digits than its factorization.

3939396380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 196969828 (or 196969826 counting only the distinct ones).

The product of its (nonzero) digits is 2834352, while the sum is 53.

The square root of 3939396380 is about 62764.6108886210. The cubic root of 3939396380 is about 1579.3433659864.

The spelling of 3939396380 in words is "three billion, nine hundred thirty-nine million, three hundred ninety-six thousand, three hundred eighty".