379730785729 has 3 divisors (see below), whose sum is σ = 379731401953. Its totient is φ = 379730169506.

The previous prime is 379730785723. The next prime is 379730785747. The reversal of 379730785729 is 927587037973.

It is a happy number.

The square root of 379730785729 is 616223.

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, and also an emirpimes, since its reverse is a distinct semiprime: 927587037973 = 6089 ⋅152338157.

It is not a de Polignac number, because 379730785729 - 2¹¹ = 379730783681 is a prime.

It is a super-2 number, since 2×379730785729² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (379730785723) 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, 308112 + ... + 924334.

Almost surely, 2^379730785729 is an apocalyptic number.

379730785729 is the 616223-rd square number.

379730785729 is the 308112-nd centered octagonal number.

It is an amenable number.

379730785729 is a deficient number, since it is larger than the sum of its proper divisors (616224).

379730785729 is an frugal number, since it uses more digits than its factorization.

379730785729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1232446 (or 616223 counting only the distinct ones).

The product of its (nonzero) digits is 140026320, while the sum is 67.

The spelling of 379730785729 in words is "three hundred seventy-nine billion, seven hundred thirty million, seven hundred eighty-five thousand, seven hundred twenty-nine".