493970778 has 128 divisors (see below), whose sum is σ = 1334784000. Its totient is φ = 132269760.

The previous prime is 493970773. The next prime is 493970783. The reversal of 493970778 is 877079394.

It is an interprime number because it is at equal distance from previous prime (493970773) and next prime (493970783).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (493970773) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 782523 + ... + 783153.

It is an arithmetic number, because the mean of its divisors is an integer number (10428000).

Almost surely, 2^493970778 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 493970778, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (667392000).

493970778 is an abundant number, since it is smaller than the sum of its proper divisors (840813222).

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

493970778 is a wasteful number, since it uses less digits than its factorization.

493970778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 777 (or 771 counting only the distinct ones).

The product of its (nonzero) digits is 2667168, while the sum is 54.

The square root of 493970778 is about 22225.4533812024. The cubic root of 493970778 is about 790.4973517261.

The spelling of 493970778 in words is "four hundred ninety-three million, nine hundred seventy thousand, seven hundred seventy-eight".