920544109 has 2 divisors, whose sum is σ = 920544110. Its totient is φ = 920544108.

The previous prime is 920544083. The next prime is 920544113. The reversal of 920544109 is 901445029.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 919908900 + 635209 = 30330^2 + 797^2 .

It is an emirp because it is prime and its reverse (901445029) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 920544109 - 2⁵ = 920544077 is a prime.

It is a super-2 number, since 2×920544109² = 1694802913229207762, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (920544409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 460272054 + 460272055.

It is an arithmetic number, because the mean of its divisors is an integer number (460272055).

Almost surely, 2^920544109 is an apocalyptic number.

It is an amenable number.

920544109 is a deficient number, since it is larger than the sum of its proper divisors (1).

920544109 is an equidigital number, since it uses as much as digits as its factorization.

920544109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12960, while the sum is 34.

The square root of 920544109 is about 30340.4698216755. The cubic root of 920544109 is about 972.7805255095.

The spelling of 920544109 in words is "nine hundred twenty million, five hundred forty-four thousand, one hundred nine".