3982478869 has 4 divisors (see below), whose sum is σ = 4192083040. Its totient is φ = 3772874700.

The previous prime is 3982478839. The next prime is 3982478921. The reversal of 3982478869 is 9688742893.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 3982478869 - 2⁷ = 3982478741 is a prime.

It is a super-2 number, since 2×3982478869² = 31720275884063038322, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3982478869.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3982478839) 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, 104802057 + ... + 104802094.

It is an arithmetic number, because the mean of its divisors is an integer number (1048020760).

Almost surely, 2^3982478869 is an apocalyptic number.

It is an amenable number.

3982478869 is a deficient number, since it is larger than the sum of its proper divisors (209604171).

3982478869 is a wasteful number, since it uses less digits than its factorization.

3982478869 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 209604170.

The product of its digits is 41803776, while the sum is 64.

The square root of 3982478869 is about 63106.8844818059. The cubic root of 3982478869 is about 1585.0799044194.

The spelling of 3982478869 in words is "three billion, nine hundred eighty-two million, four hundred seventy-eight thousand, eight hundred sixty-nine".