920406863 has 2 divisors, whose sum is σ = 920406864. Its totient is φ = 920406862.

The previous prime is 920406841. The next prime is 920406919. The reversal of 920406863 is 368604029.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 920406863 - 2¹⁰ = 920405839 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (920406803) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 460203431 + 460203432.

It is an arithmetic number, because the mean of its divisors is an integer number (460203432).

Almost surely, 2^920406863 is an apocalyptic number.

920406863 is a deficient number, since it is larger than the sum of its proper divisors (1).

920406863 is an equidigital number, since it uses as much as digits as its factorization.

920406863 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 62208, while the sum is 38.

The square root of 920406863 is about 30338.2079727857. The cubic root of 920406863 is about 972.7321784249.

The spelling of 920406863 in words is "nine hundred twenty million, four hundred six thousand, eight hundred sixty-three".