493721490 has 16 divisors (see below), whose sum is σ = 1184931648. Its totient is φ = 131659056.

The previous prime is 493721489. The next prime is 493721567. The reversal of 493721490 is 94127394.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8228662 + ... + 8228721.

It is an arithmetic number, because the mean of its divisors is an integer number (74058228).

Almost surely, 2^493721490 is an apocalyptic number.

493721490 is an abundant number, since it is smaller than the sum of its proper divisors (691210158).

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

493721490 is a wasteful number, since it uses less digits than its factorization.

493721490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16457393.

The product of its (nonzero) digits is 54432, while the sum is 39.

The square root of 493721490 is about 22219.8445089069. The cubic root of 493721490 is about 790.3643515085.

The spelling of 493721490 in words is "four hundred ninety-three million, seven hundred twenty-one thousand, four hundred ninety".