394227487 has 4 divisors (see below), whose sum is σ = 394347136. Its totient is φ = 394107840.

The previous prime is 394227481. The next prime is 394227503. The reversal of 394227487 is 784722493.

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 394227487 - 2⁷ = 394227359 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 (394227481) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 54738 + ... + 61519.

It is an arithmetic number, because the mean of its divisors is an integer number (98586784).

Almost surely, 2^394227487 is an apocalyptic number.

394227487 is a deficient number, since it is larger than the sum of its proper divisors (119649).

394227487 is a wasteful number, since it uses less digits than its factorization.

394227487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119648.

The product of its digits is 677376, while the sum is 46.

The square root of 394227487 is about 19855.1627291241. The cubic root of 394227487 is about 733.2447585628.

The spelling of 394227487 in words is "three hundred ninety-four million, two hundred twenty-seven thousand, four hundred eighty-seven".