478340787 has 4 divisors (see below), whose sum is σ = 637787720. Its totient is φ = 318893856.

The previous prime is 478340767. The next prime is 478340791. The reversal of 478340787 is 787043874.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 478340787 - 2⁸ = 478340531 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (478340767) 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, 79723462 + ... + 79723467.

It is an arithmetic number, because the mean of its divisors is an integer number (159446930).

Almost surely, 2^478340787 is an apocalyptic number.

478340787 is a deficient number, since it is larger than the sum of its proper divisors (159446933).

478340787 is a wasteful number, since it uses less digits than its factorization.

478340787 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 159446932.

The product of its (nonzero) digits is 1053696, while the sum is 48.

The square root of 478340787 is about 21871.0033377529. The cubic root of 478340787 is about 782.0703201612.

The spelling of 478340787 in words is "four hundred seventy-eight million, three hundred forty thousand, seven hundred eighty-seven".