493721867 has 2 divisors, whose sum is σ = 493721868. Its totient is φ = 493721866.

The previous prime is 493721863. The next prime is 493721873. The reversal of 493721867 is 768127394.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 493721867 - 2² = 493721863 is a prime.

It is a super-2 number, since 2×493721867² = 487522563907931378, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (493721863) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 246860933 + 246860934.

It is an arithmetic number, because the mean of its divisors is an integer number (246860934).

Almost surely, 2^493721867 is an apocalyptic number.

493721867 is a deficient number, since it is larger than the sum of its proper divisors (1).

493721867 is an equidigital number, since it uses as much as digits as its factorization.

493721867 is an evil number, because the sum of its binary digits is even.

The product of its digits is 508032, while the sum is 47.

The square root of 493721867 is about 22219.8529923130. The cubic root of 493721867 is about 790.3645526795.

The spelling of 493721867 in words is "four hundred ninety-three million, seven hundred twenty-one thousand, eight hundred sixty-seven".