420924089 has 2 divisors, whose sum is σ = 420924090. Its totient is φ = 420924088.

The previous prime is 420924079. The next prime is 420924103. The reversal of 420924089 is 980429024.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 282508864 + 138415225 = 16808^2 + 11765^2 .

It is a cyclic number.

It is not a de Polignac number, because 420924089 - 2¹⁶ = 420858553 is a prime.

It is not a weakly prime, because it can be changed into another prime (420924079) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210462044 + 210462045.

It is an arithmetic number, because the mean of its divisors is an integer number (210462045).

Almost surely, 2^420924089 is an apocalyptic number.

It is an amenable number.

420924089 is a deficient number, since it is larger than the sum of its proper divisors (1).

420924089 is an equidigital number, since it uses as much as digits as its factorization.

420924089 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 41472, while the sum is 38.

The square root of 420924089 is about 20516.4346074068. The cubic root of 420924089 is about 749.4360732737.

The spelling of 420924089 in words is "four hundred twenty million, nine hundred twenty-four thousand, eighty-nine".