427738667 has 4 divisors (see below), whose sum is σ = 431106816. Its totient is φ = 424370520.

The previous prime is 427738643. The next prime is 427738679. The reversal of 427738667 is 766837724.

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

It is a cyclic number.

It is not a de Polignac number, because 427738667 - 2¹⁰ = 427737643 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (420738667) 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, 1683884 + ... + 1684137.

It is an arithmetic number, because the mean of its divisors is an integer number (107776704).

Almost surely, 2^427738667 is an apocalyptic number.

427738667 is a deficient number, since it is larger than the sum of its proper divisors (3368149).

427738667 is a wasteful number, since it uses less digits than its factorization.

427738667 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3368148.

The product of its digits is 2370816, while the sum is 50.

The square root of 427738667 is about 20681.8438974865. The cubic root of 427738667 is about 753.4587901369.

The spelling of 427738667 in words is "four hundred twenty-seven million, seven hundred thirty-eight thousand, six hundred sixty-seven".