3979818669 has 16 divisors (see below), whose sum is σ = 5443848000. Its totient is φ = 2585314560.

The previous prime is 3979818653. The next prime is 3979818697. The reversal of 3979818669 is 9668189793.

It is not a de Polignac number, because 3979818669 - 2⁴ = 3979818653 is a prime.

It is a super-2 number, since 2×3979818669² = 31677913276241863122, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3979818649) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 82044 + ... + 121205.

It is an arithmetic number, because the mean of its divisors is an integer number (340240500).

Almost surely, 2^3979818669 is an apocalyptic number.

It is an amenable number.

3979818669 is a deficient number, since it is larger than the sum of its proper divisors (1464029331).

3979818669 is a wasteful number, since it uses less digits than its factorization.

3979818669 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 203420.

The product of its digits is 35271936, while the sum is 66.

The square root of 3979818669 is about 63085.8040211901. The cubic root of 3979818669 is about 1584.7268940693.

The spelling of 3979818669 in words is "three billion, nine hundred seventy-nine million, eight hundred eighteen thousand, six hundred sixty-nine".