427244709 has 4 divisors (see below), whose sum is σ = 569659616. Its totient is φ = 284829804.

The previous prime is 427244707. The next prime is 427244747. The reversal of 427244709 is 907442724.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 427244709 - 2¹ = 427244707 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (427244707) 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, 71207449 + ... + 71207454.

It is an arithmetic number, because the mean of its divisors is an integer number (142414904).

Almost surely, 2^427244709 is an apocalyptic number.

It is an amenable number.

427244709 is a deficient number, since it is larger than the sum of its proper divisors (142414907).

427244709 is a wasteful number, since it uses less digits than its factorization.

427244709 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142414906.

The product of its (nonzero) digits is 112896, while the sum is 39.

The square root of 427244709 is about 20669.8986209415. The cubic root of 427244709 is about 753.1686438531.

The spelling of 427244709 in words is "four hundred twenty-seven million, two hundred forty-four thousand, seven hundred nine".