427807911 has 4 divisors (see below), whose sum is σ = 570410552. Its totient is φ = 285205272.

The previous prime is 427807871. The next prime is 427807951. The reversal of 427807911 is 119708724.

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

It is an interprime number because it is at equal distance from previous prime (427807871) and next prime (427807951).

It is not a de Polignac number, because 427807911 - 2⁶ = 427807847 is a prime.

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 427807911.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (427807951) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 71301316 + ... + 71301321.

It is an arithmetic number, because the mean of its divisors is an integer number (142602638).

Almost surely, 2^427807911 is an apocalyptic number.

427807911 is a deficient number, since it is larger than the sum of its proper divisors (142602641).

427807911 is a wasteful number, since it uses less digits than its factorization.

427807911 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142602640.

The product of its (nonzero) digits is 28224, while the sum is 39.

The square root of 427807911 is about 20683.5178584302. The cubic root of 427807911 is about 753.4994455568.

The spelling of 427807911 in words is "four hundred twenty-seven million, eight hundred seven thousand, nine hundred eleven".