493398090 has 48 divisors (see below), whose sum is σ = 1284683400. Its totient is φ = 131383296.

The previous prime is 493398067. The next prime is 493398193. The reversal of 493398090 is 90893394.

It can be written as a sum of positive squares in 4 ways, for example, as 399560121 + 93837969 = 19989^2 + 9687^2 .

It is a super-3 number, since 3×493398090³ (a number of 27 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 65646 + ... + 72774.

Almost surely, 2^493398090 is an apocalyptic number.

493398090 is an abundant number, since it is smaller than the sum of its proper divisors (791285310).

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

493398090 is a wasteful number, since it uses less digits than its factorization.

493398090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7911 (or 7908 counting only the distinct ones).

The product of its (nonzero) digits is 209952, while the sum is 45.

The square root of 493398090 is about 22212.5660381686. The cubic root of 493398090 is about 790.1917443026.

The spelling of 493398090 in words is "four hundred ninety-three million, three hundred ninety-eight thousand, ninety".