493945420 has 24 divisors (see below), whose sum is σ = 1043655984. Its totient is φ = 196364736.

The previous prime is 493945399. The next prime is 493945423. The reversal of 493945420 is 24549394.

It is not an unprimeable number, because it can be changed into a prime (493945423) 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, 72499 + ... + 79018.

It is an arithmetic number, because the mean of its divisors is an integer number (43485666).

Almost surely, 2^493945420 is an apocalyptic number.

It is an amenable number.

493945420 is an abundant number, since it is smaller than the sum of its proper divisors (549710564).

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

493945420 is a wasteful number, since it uses less digits than its factorization.

493945420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151689 (or 151687 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 40.

The square root of 493945420 is about 22224.8829018288. The cubic root of 493945420 is about 790.4838247620.

The spelling of 493945420 in words is "four hundred ninety-three million, nine hundred forty-five thousand, four hundred twenty".