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493003921 is a prime number
BaseRepresentation
bin11101011000101…
…010010010010001
31021100200012020111
4131120222102101
52002202111141
6120530441321
715134315134
oct3530522221
91240605214
10493003921
11233319163
12119133241
137b1a58c7
144969421b
152d435381
hex1d62a491

493003921 has 2 divisors, whose sum is σ = 493003922. Its totient is φ = 493003920.

The previous prime is 493003913. The next prime is 493004027. The reversal of 493003921 is 129300394.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 411643521 + 81360400 = 20289^2 + 9020^2 .

It is a cyclic number.

It is not a de Polignac number, because 493003921 - 23 = 493003913 is a prime.

It is a super-2 number, since 2×4930039212 = 486105732242748482, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (493004921) by changing a digit.

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 as a sum of consecutive naturals, namely, 246501960 + 246501961.

It is an arithmetic number, because the mean of its divisors is an integer number (246501961).

Almost surely, 2493003921 is an apocalyptic number.

It is an amenable number.

493003921 is a deficient number, since it is larger than the sum of its proper divisors (1).

493003921 is an equidigital number, since it uses as much as digits as its factorization.

493003921 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5832, while the sum is 31.

The square root of 493003921 is about 22203.6916074782. The cubic root of 493003921 is about 789.9812637761.

The spelling of 493003921 in words is "four hundred ninety-three million, three thousand, nine hundred twenty-one".