920563389 has 12 divisors (see below), whose sum is σ = 1342869372. Its totient is φ = 607632000.

The previous prime is 920563373. The next prime is 920563403. The reversal of 920563389 is 983365029.

920563389 is a `hidden beast` number, since 9 + 2 + 0 + 5 + 633 + 8 + 9 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 439112025 + 481451364 = 20955^2 + 21942^2 .

It is not a de Polignac number, because 920563389 - 2⁴ = 920563373 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (920563309) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 505452 + ... + 507269.

It is an arithmetic number, because the mean of its divisors is an integer number (111905781).

Almost surely, 2^920563389 is an apocalyptic number.

It is an amenable number.

920563389 is a deficient number, since it is larger than the sum of its proper divisors (422305983).

920563389 is a wasteful number, since it uses less digits than its factorization.

920563389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1012828 (or 1012825 counting only the distinct ones).

The product of its (nonzero) digits is 349920, while the sum is 45.

The square root of 920563389 is about 30340.7875474583. The cubic root of 920563389 is about 972.7873168109.

The spelling of 920563389 in words is "nine hundred twenty million, five hundred sixty-three thousand, three hundred eighty-nine".