3989475069 has 4 divisors (see below), whose sum is σ = 5319300096. Its totient is φ = 2659650044.

The previous prime is 3989475059. The next prime is 3989475109. The reversal of 3989475069 is 9605749893.

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, and also an emirpimes, since its reverse is a distinct semiprime: 9605749893 = 3 ⋅3201916631.

It is a cyclic number.

It is not a de Polignac number, because 3989475069 - 2²⁰ = 3988426493 is a prime.

It is a super-2 number, since 2×3989475069² = 31831822652345109522, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3989475059) 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, 664912509 + ... + 664912514.

It is an arithmetic number, because the mean of its divisors is an integer number (1329825024).

Almost surely, 2^3989475069 is an apocalyptic number.

It is an amenable number.

3989475069 is a deficient number, since it is larger than the sum of its proper divisors (1329825027).

3989475069 is a wasteful number, since it uses less digits than its factorization.

3989475069 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1329825026.

The product of its (nonzero) digits is 14696640, while the sum is 60.

The square root of 3989475069 is about 63162.2915116290. The cubic root of 3989475069 is about 1586.0075551694.

The spelling of 3989475069 in words is "three billion, nine hundred eighty-nine million, four hundred seventy-five thousand, sixty-nine".