427798081 has 4 divisors (see below), whose sum is σ = 452962692. Its totient is φ = 402633472.

The previous prime is 427798079. The next prime is 427798093. The reversal of 427798081 is 180897724.

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 236667456 + 191130625 = 15384^2 + 13825^2 .

It is a cyclic number.

It is not a de Polignac number, because 427798081 - 2¹ = 427798079 is a prime.

It is a super-2 number, since 2×427798081² = 366022396214565122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (427798381) 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 in 3 ways as a sum of consecutive naturals, for example, 12582280 + ... + 12582313.

It is an arithmetic number, because the mean of its divisors is an integer number (113240673).

Almost surely, 2^427798081 is an apocalyptic number.

It is an amenable number.

427798081 is a deficient number, since it is larger than the sum of its proper divisors (25164611).

427798081 is a wasteful number, since it uses less digits than its factorization.

427798081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25164610.

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

The square root of 427798081 is about 20683.2802282423. The cubic root of 427798081 is about 753.4936743091.

The spelling of 427798081 in words is "four hundred twenty-seven million, seven hundred ninety-eight thousand, eighty-one".