4780857 has 4 divisors (see below), whose sum is σ = 6374480. Its totient is φ = 3187236.

The previous prime is 4780823. The next prime is 4780861. The reversal of 4780857 is 7580874.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 4780857 - 2⁷ = 4780729 is a prime.

It is a D-number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4780877) 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, 796807 + ... + 796812.

It is an arithmetic number, because the mean of its divisors is an integer number (1593620).

Almost surely, 2^4780857 is an apocalyptic number.

It is an amenable number.

4780857 is a deficient number, since it is larger than the sum of its proper divisors (1593623).

4780857 is a wasteful number, since it uses less digits than its factorization.

4780857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1593622.

The product of its (nonzero) digits is 62720, while the sum is 39.

The square root of 4780857 is about 2186.5170934617. The cubic root of 4780857 is about 168.4619866290.

The spelling of 4780857 in words is "four million, seven hundred eighty thousand, eight hundred fifty-seven".