920743969 has 2 divisors, whose sum is σ = 920743970. Its totient is φ = 920743968.

The previous prime is 920743961. The next prime is 920743991. The reversal of 920743969 is 969347029.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 507150400 + 413593569 = 22520^2 + 20337^2 .

It is a cyclic number.

It is not a de Polignac number, because 920743969 - 2³ = 920743961 is a prime.

It is a super-2 number, since 2×920743969² = 1695538912899745922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (920743961) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 460371984 + 460371985.

It is an arithmetic number, because the mean of its divisors is an integer number (460371985).

Almost surely, 2^920743969 is an apocalyptic number.

It is an amenable number.

920743969 is a deficient number, since it is larger than the sum of its proper divisors (1).

920743969 is an equidigital number, since it uses as much as digits as its factorization.

920743969 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 734832, while the sum is 49.

The square root of 920743969 is about 30343.7632636428. The cubic root of 920743969 is about 972.8509207773.

The spelling of 920743969 in words is "nine hundred twenty million, seven hundred forty-three thousand, nine hundred sixty-nine".