3996452786769 has 27 divisors (see below), whose sum is σ = 5910405224763. Its totient is φ = 2602173424032.

The previous prime is 3996452786747. The next prime is 3996452786789. The reversal of 3996452786769 is 9676872546993.

The square root of 3996452786769 is 1999113.

It is a perfect power (a square), and thus also a powerful number.

3996452786769 is a `hidden beast` number, since 3 + 9 + 9 + 6 + 4 + 527 + 86 + 7 + 6 + 9 = 666.

It can be written as a sum of positive squares in only one way, i.e., 3872610731025 + 123842055744 = 1967895^2 + 351912^2 .

It is not a de Polignac number, because 3996452786769 - 2⁵ = 3996452786737 is a prime.

It is a super-2 number, since 2×3996452786769² (a number of 26 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (3996452786789) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 257877829 + ... + 257893325.

Almost surely, 2^{3996452786769} is an apocalyptic number.

3996452786769 is the 1999113-rd square number.

3996452786769 is the 999557-th centered octagonal number.

It is an amenable number.

3996452786769 is a deficient number, since it is larger than the sum of its proper divisors (1913952437994).

3996452786769 is an frugal number, since it uses more digits than its factorization.

3996452786769 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31086 (or 15543 counting only the distinct ones).

The product of its digits is 7407106560, while the sum is 81.

Multiplying 3996452786769 by its sum of digits (81), we get a square (323712675728289 = 17992017²).

The spelling of 3996452786769 in words is "three trillion, nine hundred ninety-six billion, four hundred fifty-two million, seven hundred eighty-six thousand, seven hundred sixty-nine".