397752005329 has 4 divisors (see below), whose sum is σ = 454573720384. Its totient is φ = 340930290276.

The previous prime is 397752005303. The next prime is 397752005359. The reversal of 397752005329 is 923500257793.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 923500257793 = 3121 ⋅295898833.

It is a cyclic number.

It is not a de Polignac number, because 397752005329 - 2⁷ = 397752005201 is a prime.

It is not an unprimeable number, because it can be changed into a prime (397752005359) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28410857517 + ... + 28410857530.

It is an arithmetic number, because the mean of its divisors is an integer number (113643430096).

Almost surely, 2^397752005329 is an apocalyptic number.

It is an amenable number.

397752005329 is a deficient number, since it is larger than the sum of its proper divisors (56821715055).

397752005329 is an equidigital number, since it uses as much as digits as its factorization.

397752005329 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56821715054.

The product of its (nonzero) digits is 3572100, while the sum is 52.

The spelling of 397752005329 in words is "three hundred ninety-seven billion, seven hundred fifty-two million, five thousand, three hundred twenty-nine".