427894917 has 8 divisors (see below), whose sum is σ = 581291424. Its totient is φ = 279880848.

The previous prime is 427894903. The next prime is 427894927. The reversal of 427894917 is 719498724.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 427894917 - 2⁸ = 427894661 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 427894917.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (427894927) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1345423 + ... + 1345740.

It is an arithmetic number, because the mean of its divisors is an integer number (72661428).

Almost surely, 2^427894917 is an apocalyptic number.

It is an amenable number.

427894917 is a deficient number, since it is larger than the sum of its proper divisors (153396507).

427894917 is a wasteful number, since it uses less digits than its factorization.

427894917 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2691219.

The product of its digits is 1016064, while the sum is 51.

The square root of 427894917 is about 20685.6210204093. The cubic root of 427894917 is about 753.5505234099.

The spelling of 427894917 in words is "four hundred twenty-seven million, eight hundred ninety-four thousand, nine hundred seventeen".