3979925099 has 4 divisors (see below), whose sum is σ = 4019330400. Its totient is φ = 3940519800.

The previous prime is 3979925087. The next prime is 3979925123. The reversal of 3979925099 is 9905299793.

3979925099 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9905299793 = 1051 ⋅9424643.

It is a cyclic number.

It is not a de Polignac number, because 3979925099 - 2¹² = 3979921003 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3979925039) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19702499 + ... + 19702700.

It is an arithmetic number, because the mean of its divisors is an integer number (1004832600).

Almost surely, 2^3979925099 is an apocalyptic number.

3979925099 is a deficient number, since it is larger than the sum of its proper divisors (39405301).

3979925099 is a wasteful number, since it uses less digits than its factorization.

3979925099 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39405300.

The product of its (nonzero) digits is 12400290, while the sum is 62.

The square root of 3979925099 is about 63086.6475492239. The cubic root of 3979925099 is about 1584.7410204231.

The spelling of 3979925099 in words is "three billion, nine hundred seventy-nine million, nine hundred twenty-five thousand, ninety-nine".