485739978 has 16 divisors (see below), whose sum is σ = 1022610720. Its totient is φ = 153391536.

The previous prime is 485739973. The next prime is 485740001. The reversal of 485739978 is 879937584.

It is not an unprimeable number, because it can be changed into a prime (485739973) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2130325 + ... + 2130552.

It is an arithmetic number, because the mean of its divisors is an integer number (63913170).

Almost surely, 2^485739978 is an apocalyptic number.

485739978 is an abundant number, since it is smaller than the sum of its proper divisors (536870742).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

485739978 is a wasteful number, since it uses less digits than its factorization.

485739978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4260901.

The product of its digits is 15240960, while the sum is 60.

The square root of 485739978 is about 22039.5094773001. The cubic root of 485739978 is about 786.0821771133.

The spelling of 485739978 in words is "four hundred eighty-five million, seven hundred thirty-nine thousand, nine hundred seventy-eight".