4059979173721 has 3 divisors (see below), whose sum is σ = 4059981188661. Its totient is φ = 4059977158782.

The previous prime is 4059979173671. The next prime is 4059979173727. The reversal of 4059979173721 is 1273719799504.

It is a happy number.

The square root of 4059979173721 is 2014939.

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 4059979173721 - 2⁴¹ = 1860955918169 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4059979173727) 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, 1007470 + ... + 3022408.

It is an arithmetic number, because the mean of its divisors is an integer number (1353327062887).

Almost surely, 2^{4059979173721} is an apocalyptic number.

4059979173721 is the 2014939-th square number.

4059979173721 is the 1007470-th centered octagonal number.

It is an amenable number.

4059979173721 is a deficient number, since it is larger than the sum of its proper divisors (2014940).

4059979173721 is an frugal number, since it uses more digits than its factorization.

4059979173721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4029878 (or 2014939 counting only the distinct ones).

The product of its (nonzero) digits is 30005640, while the sum is 64.

Multiplying 4059979173721 by its sum of digits (64), we get a square (259838667118144 = 16119512²).

The spelling of 4059979173721 in words is "four trillion, fifty-nine billion, nine hundred seventy-nine million, one hundred seventy-three thousand, seven hundred twenty-one".