394894487 has 8 divisors (see below), whose sum is σ = 425465040. Its totient is φ = 364351680.

The previous prime is 394894483. The next prime is 394894501. The reversal of 394894487 is 784498493.

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

It is a cyclic number.

It is not a de Polignac number, because 394894487 - 2² = 394894483 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (394894483) 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, 29912 + ... + 41042.

It is an arithmetic number, because the mean of its divisors is an integer number (53183130).

Almost surely, 2^394894487 is an apocalyptic number.

394894487 is a deficient number, since it is larger than the sum of its proper divisors (30570553).

394894487 is a wasteful number, since it uses less digits than its factorization.

394894487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13873.

The product of its digits is 6967296, while the sum is 56.

The square root of 394894487 is about 19871.9522694676. The cubic root of 394894487 is about 733.6580552040.

The spelling of 394894487 in words is "three hundred ninety-four million, eight hundred ninety-four thousand, four hundred eighty-seven".