920919049 has 2 divisors, whose sum is σ = 920919050. Its totient is φ = 920919048.

The previous prime is 920919031. The next prime is 920919133. The reversal of 920919049 is 940919029.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 701879049 + 219040000 = 26493^2 + 14800^2 .

It is a cyclic number.

It is not a de Polignac number, because 920919049 - 2²⁵ = 887364617 is a prime.

It is a super-2 number, since 2×920919049² = 1696183789622128802, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 920918996 and 920919014.

It is not a weakly prime, because it can be changed into another prime (920919749) 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, 460459524 + 460459525.

It is an arithmetic number, because the mean of its divisors is an integer number (460459525).

Almost surely, 2^920919049 is an apocalyptic number.

It is an amenable number.

920919049 is a deficient number, since it is larger than the sum of its proper divisors (1).

920919049 is an equidigital number, since it uses as much as digits as its factorization.

920919049 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 52488, while the sum is 43.

The square root of 920919049 is about 30346.6480686088. The cubic root of 920919049 is about 972.9125795917.

The spelling of 920919049 in words is "nine hundred twenty million, nine hundred nineteen thousand, forty-nine".