427049281 has 4 divisors (see below), whose sum is σ = 428035972. Its totient is φ = 426062592.

The previous prime is 427049267. The next prime is 427049341. The reversal of 427049281 is 182940724.

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 46799281 + 380250000 = 6841^2 + 19500^2 .

It is a cyclic number.

It is not a de Polignac number, because 427049281 - 2¹⁷ = 426918209 is a prime.

It is a super-2 number, since 2×427049281² = 364742176805233922, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 427049281.

It is not an unprimeable number, because it can be changed into a prime (427049881) 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, 492696 + ... + 493561.

It is an arithmetic number, because the mean of its divisors is an integer number (107008993).

Almost surely, 2^427049281 is an apocalyptic number.

It is an amenable number.

427049281 is a deficient number, since it is larger than the sum of its proper divisors (986691).

427049281 is an equidigital number, since it uses as much as digits as its factorization.

427049281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 986690.

The product of its (nonzero) digits is 32256, while the sum is 37.

The square root of 427049281 is about 20665.1707227402. The cubic root of 427049281 is about 753.0537895423.

The spelling of 427049281 in words is "four hundred twenty-seven million, forty-nine thousand, two hundred eighty-one".