427190887 has 2 divisors, whose sum is σ = 427190888. Its totient is φ = 427190886.

The previous prime is 427190879. The next prime is 427190893. The reversal of 427190887 is 788091724.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 427190887 - 2³ = 427190879 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (427190867) 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, 213595443 + 213595444.

It is an arithmetic number, because the mean of its divisors is an integer number (213595444).

Almost surely, 2^427190887 is an apocalyptic number.

427190887 is a deficient number, since it is larger than the sum of its proper divisors (1).

427190887 is an equidigital number, since it uses as much as digits as its factorization.

427190887 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 225792, while the sum is 46.

The square root of 427190887 is about 20668.5966383787. The cubic root of 427190887 is about 753.1370158078.

The spelling of 427190887 in words is "four hundred twenty-seven million, one hundred ninety thousand, eight hundred eighty-seven".