426934187 has 2 divisors, whose sum is σ = 426934188. Its totient is φ = 426934186.

The previous prime is 426934163. The next prime is 426934217. The reversal of 426934187 is 781439624.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 426934187 - 2¹⁰ = 426933163 is a prime.

It is not a weakly prime, because it can be changed into another prime (426934127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 213467093 + 213467094.

It is an arithmetic number, because the mean of its divisors is an integer number (213467094).

Almost surely, 2^426934187 is an apocalyptic number.

426934187 is a deficient number, since it is larger than the sum of its proper divisors (1).

426934187 is an equidigital number, since it uses as much as digits as its factorization.

426934187 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 290304, while the sum is 44.

The square root of 426934187 is about 20662.3858012573. The cubic root of 426934187 is about 752.9861316520.

The spelling of 426934187 in words is "four hundred twenty-six million, nine hundred thirty-four thousand, one hundred eighty-seven".