477878 has 4 divisors (see below), whose sum is σ = 716820. Its totient is φ = 238938.

The previous prime is 477863. The next prime is 477881. The reversal of 477878 is 878774.

It is a happy number.

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

It is a nialpdrome in base 14.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 119468 + ... + 119471.

It is an arithmetic number, because the mean of its divisors is an integer number (179205).

2⁴⁷⁷⁸⁷⁸ is an apocalyptic number.

477878 is a deficient number, since it is larger than the sum of its proper divisors (238942).

477878 is a wasteful number, since it uses less digits than its factorization.

477878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 238941.

The product of its digits is 87808, while the sum is 41.

The square root of 477878 is about 691.2872051470. The cubic root of 477878 is about 78.1818025304.

The spelling of 477878 in words is "four hundred seventy-seven thousand, eight hundred seventy-eight".