4486978 has 12 divisors (see below), whose sum is σ = 7037478. Its totient is φ = 2145440.

The previous prime is 4486973. The next prime is 4487003. The reversal of 4486978 is 8796844.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 2518569 + 1968409 = 1587^2 + 1403^2 .

It is a Harshad number since it is a multiple of its sum of digits (46).

It is not an unprimeable number, because it can be changed into a prime (4486973) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1063 + ... + 3178.

Almost surely, 2^4486978 is an apocalyptic number.

4486978 is a deficient number, since it is larger than the sum of its proper divisors (2550500).

4486978 is a wasteful number, since it uses less digits than its factorization.

4486978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4289 (or 4266 counting only the distinct ones).

The product of its digits is 387072, while the sum is 46.

The square root of 4486978 is about 2118.2488050274. The cubic root of 4486978 is about 164.9369578569.

The spelling of 4486978 in words is "four million, four hundred eighty-six thousand, nine hundred seventy-eight".