427897 has 4 divisors (see below), whose sum is σ = 429300. Its totient is φ = 426496.

The previous prime is 427883. The next prime is 427913. The reversal of 427897 is 798724.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 219961 + 207936 = 469^2 + 456^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-427897 is a prime.

It is a Duffinian number.

427897 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (427877) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28 + ... + 925.

It is an arithmetic number, because the mean of its divisors is an integer number (107325).

2⁴²⁷⁸⁹⁷ is an apocalyptic number.

It is an amenable number.

427897 is a deficient number, since it is larger than the sum of its proper divisors (1403).

427897 is an equidigital number, since it uses as much as digits as its factorization.

427897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1402.

The product of its digits is 28224, while the sum is 37.

The square root of 427897 is about 654.1383645682. The cubic root of 427897 is about 75.3551746174.

The spelling of 427897 in words is "four hundred twenty-seven thousand, eight hundred ninety-seven".