478194707 has 4 divisors (see below), whose sum is σ = 479639736. Its totient is φ = 476749680.

The previous prime is 478194653. The next prime is 478194709. The reversal of 478194707 is 707491874.

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 478194707 - 2¹⁸ = 477932563 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (478194709) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 722018 + ... + 722679.

It is an arithmetic number, because the mean of its divisors is an integer number (119909934).

Almost surely, 2^478194707 is an apocalyptic number.

478194707 is a deficient number, since it is larger than the sum of its proper divisors (1445029).

478194707 is a wasteful number, since it uses less digits than its factorization.

478194707 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1445028.

The product of its (nonzero) digits is 395136, while the sum is 47.

The square root of 478194707 is about 21867.6635011608. The cubic root of 478194707 is about 781.9907001726.

The spelling of 478194707 in words is "four hundred seventy-eight million, one hundred ninety-four thousand, seven hundred seven".