427722811 has 2 divisors, whose sum is σ = 427722812. Its totient is φ = 427722810.

The previous prime is 427722809. The next prime is 427722829. The reversal of 427722811 is 118227724.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 427722811 - 2¹ = 427722809 is a prime.

Together with 427722809, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (427722871) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 213861405 + 213861406.

It is an arithmetic number, because the mean of its divisors is an integer number (213861406).

Almost surely, 2^427722811 is an apocalyptic number.

427722811 is a deficient number, since it is larger than the sum of its proper divisors (1).

427722811 is an equidigital number, since it uses as much as digits as its factorization.

427722811 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12544, while the sum is 34.

The square root of 427722811 is about 20681.4605625425. The cubic root of 427722811 is about 753.4494799427.

The spelling of 427722811 in words is "four hundred twenty-seven million, seven hundred twenty-two thousand, eight hundred eleven".