3988723958041 has 3 divisors (see below), whose sum is σ = 3988725955221. Its totient is φ = 3988721960862.

The previous prime is 3988723957961. The next prime is 3988723958057. The reversal of 3988723958041 is 1408593278893.

The square root of 3988723958041 is 1997179.

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

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 3988723958041 - 2¹³ = 3988723949849 is a prime.

It is a super-2 number, since 2×3988723958041² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3988723958441) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 998590 + ... + 2995768.

It is an arithmetic number, because the mean of its divisors is an integer number (1329575318407).

Almost surely, 2^{3988723958041} is an apocalyptic number.

3988723958041 is the 1997179-th square number.

3988723958041 is the 998590-th centered octagonal number.

It is an amenable number.

3988723958041 is a deficient number, since it is larger than the sum of its proper divisors (1997180).

3988723958041 is an frugal number, since it uses more digits than its factorization.

3988723958041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3994358 (or 1997179 counting only the distinct ones).

The product of its (nonzero) digits is 104509440, while the sum is 67.

The spelling of 3988723958041 in words is "three trillion, nine hundred eighty-eight billion, seven hundred twenty-three million, nine hundred fifty-eight thousand, forty-one".