427000897 has 4 divisors (see below), whose sum is σ = 430779780. Its totient is φ = 423222016.

The previous prime is 427000859. The next prime is 427000909. The reversal of 427000897 is 798000724.

It is a happy number.

It is a Cunningham number, because it is equal to 20664²+1.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 7529536 + 419471361 = 2744^2 + 20481^2 .

It is a cyclic number.

It is not a de Polignac number, because 427000897 - 2¹¹ = 426998849 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (427000297) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1889272 + ... + 1889497.

It is an arithmetic number, because the mean of its divisors is an integer number (107694945).

Almost surely, 2^427000897 is an apocalyptic number.

It is an amenable number.

427000897 is a deficient number, since it is larger than the sum of its proper divisors (3778883).

427000897 is a wasteful number, since it uses less digits than its factorization.

427000897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3778882.

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

The square root of 427000897 is about 20664.0000241967. Note that the first 4 decimals coincide. The cubic root of 427000897 is about 753.0253485385.

The spelling of 427000897 in words is "four hundred twenty-seven million, eight hundred ninety-seven", and thus it is an aban number.