920001001 has 2 divisors, whose sum is σ = 920001002. Its totient is φ = 920001000.

The previous prime is 920000999. The next prime is 920001007. The reversal of 920001001 is 100100029.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 532501776 + 387499225 = 23076^2 + 19685^2 .

It is a cyclic number.

It is not a de Polignac number, because 920001001 - 2¹ = 920000999 is a prime.

Together with 920000999, it forms a pair of twin primes.

920001001 is a modest number, since divided by 1001 gives 920 as remainder.

It is not a weakly prime, because it can be changed into another prime (920001007) 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 as a sum of consecutive naturals, namely, 460000500 + 460000501.

It is an arithmetic number, because the mean of its divisors is an integer number (460000501).

Almost surely, 2^920001001 is an apocalyptic number.

It is an amenable number.

920001001 is a deficient number, since it is larger than the sum of its proper divisors (1).

920001001 is an equidigital number, since it uses as much as digits as its factorization.

920001001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18, while the sum is 13.

The square root of 920001001 is about 30331.5182771981. The cubic root of 920001001 is about 972.5891789584.

The spelling of 920001001 in words is "nine hundred twenty million, one thousand, one".