3972685489 has 2 divisors, whose sum is σ = 3972685490. Its totient is φ = 3972685488.

The previous prime is 3972685439. The next prime is 3972685567. The reversal of 3972685489 is 9845862793.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3265551025 + 707134464 = 57145^2 + 26592^2 .

It is a cyclic number.

It is not a de Polignac number, because 3972685489 - 2³¹ = 1825201841 is a prime.

It is a super-2 number, since 2×3972685489² = 31564459989022338242, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (3972685439) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1986342744 + 1986342745.

It is an arithmetic number, because the mean of its divisors is an integer number (1986342745).

Almost surely, 2^3972685489 is an apocalyptic number.

It is an amenable number.

3972685489 is a deficient number, since it is larger than the sum of its proper divisors (1).

3972685489 is an equidigital number, since it uses as much as digits as its factorization.

3972685489 is an evil number, because the sum of its binary digits is even.

The product of its digits is 26127360, while the sum is 61.

The square root of 3972685489 is about 63029.2431257111. The cubic root of 3972685489 is about 1583.7795391373.

The spelling of 3972685489 in words is "three billion, nine hundred seventy-two million, six hundred eighty-five thousand, four hundred eighty-nine".