3973846969 has 4 divisors (see below), whose sum is σ = 3985233700. Its totient is φ = 3962460240.

The previous prime is 3973846967. The next prime is 3973846993. The reversal of 3973846969 is 9696483793.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9696483793 = 271 ⋅35780383.

It can be written as a sum of positive squares in 2 ways, for example, as 1919491344 + 2054355625 = 43812^2 + 45325^2 .

It is a cyclic number.

It is not a de Polignac number, because 3973846969 - 2¹ = 3973846967 is a prime.

It is a super-6 number, since 6×3973846969⁶ (a number of 59 digits) contains 666666 as substring. Note that it is a super-d number also for d = 2.

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 3973846969.

It is not an unprimeable number, because it can be changed into a prime (3973846963) 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, 5692842 + ... + 5693539.

It is an arithmetic number, because the mean of its divisors is an integer number (996308425).

Almost surely, 2^3973846969 is an apocalyptic number.

It is an amenable number.

3973846969 is a deficient number, since it is larger than the sum of its proper divisors (11386731).

3973846969 is a wasteful number, since it uses less digits than its factorization.

3973846969 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11386730.

The product of its digits is 52907904, while the sum is 64.

The square root of 3973846969 is about 63038.4562707559. The cubic root of 3973846969 is about 1583.9338721044.

The spelling of 3973846969 in words is "three billion, nine hundred seventy-three million, eight hundred forty-six thousand, nine hundred sixty-nine".