493221957 has 16 divisors (see below), whose sum is σ = 666031680. Its totient is φ = 324634752.

The previous prime is 493221947. The next prime is 493221961. The reversal of 493221957 is 759122394.

It is not a de Polignac number, because 493221957 - 2⁴ = 493221941 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (493221947) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 98019 + ... + 102927.

It is an arithmetic number, because the mean of its divisors is an integer number (41626980).

Almost surely, 2^493221957 is an apocalyptic number.

It is an amenable number.

493221957 is a deficient number, since it is larger than the sum of its proper divisors (172809723).

493221957 is a wasteful number, since it uses less digits than its factorization.

493221957 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5332.

The product of its digits is 136080, while the sum is 42.

The square root of 493221957 is about 22208.6009689940. The cubic root of 493221957 is about 790.0977056957.

The spelling of 493221957 in words is "four hundred ninety-three million, two hundred twenty-one thousand, nine hundred fifty-seven".