3969449693 has 4 divisors (see below), whose sum is σ = 4330308768. Its totient is φ = 3608590620.

The previous prime is 3969449647. The next prime is 3969449699.

It is a happy number.

3969449693 is nontrivially palindromic in base 10.

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 3969449693 - 2¹⁶ = 3969384157 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3969449699) 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, 180429521 + ... + 180429542.

It is an arithmetic number, because the mean of its divisors is an integer number (1082577192).

Almost surely, 2^3969449693 is an apocalyptic number.

It is an amenable number.

3969449693 is a deficient number, since it is larger than the sum of its proper divisors (360859075).

3969449693 is a wasteful number, since it uses less digits than its factorization.

3969449693 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 360859074.

The product of its digits is 34012224, while the sum is 62.

The square root of 3969449693 is about 63003.5688909763. The cubic root of 3969449693 is about 1583.3494203893.

The spelling of 3969449693 in words is "three billion, nine hundred sixty-nine million, four hundred forty-nine thousand, six hundred ninety-three".