427440047 has 4 divisors (see below), whose sum is σ = 437865456. Its totient is φ = 417014640.

The previous prime is 427440023. The next prime is 427440049. The reversal of 427440047 is 740044724.

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 427440047 - 2¹⁶ = 427374511 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 427439995 and 427440022.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (427440049) 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, 5212643 + ... + 5212724.

It is an arithmetic number, because the mean of its divisors is an integer number (109466364).

Almost surely, 2^427440047 is an apocalyptic number.

427440047 is a deficient number, since it is larger than the sum of its proper divisors (10425409).

427440047 is a wasteful number, since it uses less digits than its factorization.

427440047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10425408.

The product of its (nonzero) digits is 25088, while the sum is 32.

The square root of 427440047 is about 20674.6232613801. The cubic root of 427440047 is about 753.2834102758.

The spelling of 427440047 in words is "four hundred twenty-seven million, four hundred forty thousand, forty-seven".