4855978 has 4 divisors (see below), whose sum is σ = 7283970. Its totient is φ = 2427988.

The previous prime is 4855973. The next prime is 4855987. The reversal of 4855978 is 8795584.

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

It can be written as a sum of positive squares in only one way, i.e., 2505889 + 2350089 = 1583^2 + 1533^2 .

It is not an unprimeable number, because it can be changed into a prime (4855973) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1213993 + ... + 1213996.

Almost surely, 2^4855978 is an apocalyptic number.

4855978 is a deficient number, since it is larger than the sum of its proper divisors (2427992).

4855978 is a wasteful number, since it uses less digits than its factorization.

4855978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2427991.

The product of its digits is 403200, while the sum is 46.

The square root of 4855978 is about 2203.6283715727. The cubic root of 4855978 is about 169.3397457978.

It can be divided in two parts, 485597 and 8, that added together give a triangular number (485605 = T₉₈₅).

The spelling of 4855978 in words is "four million, eight hundred fifty-five thousand, nine hundred seventy-eight".