427830913 has 2 divisors, whose sum is σ = 427830914. Its totient is φ = 427830912.

The previous prime is 427830911. The next prime is 427830937. The reversal of 427830913 is 319038724.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 303909489 + 123921424 = 17433^2 + 11132^2 .

It is a cyclic number.

It is not a de Polignac number, because 427830913 - 2¹ = 427830911 is a prime.

Together with 427830911, it forms a pair of twin primes.

It is equal to p_22738942 and since 427830913 and 22738942 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (427830911) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 213915456 + 213915457.

It is an arithmetic number, because the mean of its divisors is an integer number (213915457).

Almost surely, 2^427830913 is an apocalyptic number.

It is an amenable number.

427830913 is a deficient number, since it is larger than the sum of its proper divisors (1).

427830913 is an equidigital number, since it uses as much as digits as its factorization.

427830913 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36288, while the sum is 37.

The square root of 427830913 is about 20684.0738975667. The cubic root of 427830913 is about 753.5129498136.

The spelling of 427830913 in words is "four hundred twenty-seven million, eight hundred thirty thousand, nine hundred thirteen".