920328397 has 4 divisors (see below), whose sum is σ = 923995296. Its totient is φ = 916661500.

The previous prime is 920328391. The next prime is 920328401. The reversal of 920328397 is 793823029.

It is a happy number.

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: 793823029 = 53 ⋅14977793.

It is a cyclic number.

It is not a de Polignac number, because 920328397 - 2²⁷ = 786110669 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (920328391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1833073 + ... + 1833574.

It is an arithmetic number, because the mean of its divisors is an integer number (230998824).

Almost surely, 2^920328397 is an apocalyptic number.

It is an amenable number.

920328397 is a deficient number, since it is larger than the sum of its proper divisors (3666899).

920328397 is a wasteful number, since it uses less digits than its factorization.

920328397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3666898.

The product of its (nonzero) digits is 163296, while the sum is 43.

The square root of 920328397 is about 30336.9147574370. The cubic root of 920328397 is about 972.7045353700.

The spelling of 920328397 in words is "nine hundred twenty million, three hundred twenty-eight thousand, three hundred ninety-seven".