3989654846973 has 6 divisors (see below), whose sum is σ = 5762834778974. Its totient is φ = 2659769897976.

The previous prime is 3989654846963. The next prime is 3989654847053. The reversal of 3989654846973 is 3796484569893.

3989654846973 is a `hidden beast` number, since 3 + 9 + 8 + 9 + 6 + 5 + 484 + 69 + 73 = 666.

It can be written as a sum of positive squares in only one way, i.e., 3945637967769 + 44016879204 = 1986363^2 + 209802^2 .

It is not a de Polignac number, because 3989654846973 - 2⁶ = 3989654846909 is a prime.

It is a super-4 number, since 4×3989654846973⁴ (a number of 52 digits) contains 4444 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3989654846892 and 3989654846901.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3989654846963) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 221647491490 + ... + 221647491507.

Almost surely, 2^{3989654846973} is an apocalyptic number.

It is an amenable number.

3989654846973 is a deficient number, since it is larger than the sum of its proper divisors (1773179932001).

3989654846973 is a wasteful number, since it uses less digits than its factorization.

3989654846973 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 443294983003 (or 443294983000 counting only the distinct ones).

The product of its digits is 8465264640, while the sum is 81.

The spelling of 3989654846973 in words is "three trillion, nine hundred eighty-nine billion, six hundred fifty-four million, eight hundred forty-six thousand, nine hundred seventy-three".