3913917940 has 24 divisors (see below), whose sum is σ = 8233496712. Its totient is φ = 1562849280.

The previous prime is 3913917913. The next prime is 3913917949. The reversal of 3913917940 is 497193193.

It can be written as a sum of positive squares in 4 ways, for example, as 2759821156 + 1154096784 = 52534^2 + 33972^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3913917949) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 158041 + ... + 181120.

It is an arithmetic number, because the mean of its divisors is an integer number (343062363).

Almost surely, 2^3913917940 is an apocalyptic number.

It is an amenable number.

3913917940 is an abundant number, since it is smaller than the sum of its proper divisors (4319578772).

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

3913917940 is a wasteful number, since it uses less digits than its factorization.

3913917940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 339747 (or 339745 counting only the distinct ones).

The product of its (nonzero) digits is 183708, while the sum is 46.

The square root of 3913917940 is about 62561.3134452914. The cubic root of 3913917940 is about 1575.9311453724.

The spelling of 3913917940 in words is "three billion, nine hundred thirteen million, nine hundred seventeen thousand, nine hundred forty".