490221929 has 2 divisors, whose sum is σ = 490221930. Its totient is φ = 490221928.

The previous prime is 490221899. The next prime is 490221943. The reversal of 490221929 is 929122094.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 322130704 + 168091225 = 17948^2 + 12965^2 .

It is a cyclic number.

It is not a de Polignac number, because 490221929 - 2²⁰ = 489173353 is a prime.

It is a super-3 number, since 3×490221929³ (a number of 27 digits) contains 333 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 490221892 and 490221901.

It is not a weakly prime, because it can be changed into another prime (490221959) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 245110964 + 245110965.

It is an arithmetic number, because the mean of its divisors is an integer number (245110965).

Almost surely, 2^490221929 is an apocalyptic number.

It is an amenable number.

490221929 is a deficient number, since it is larger than the sum of its proper divisors (1).

490221929 is an equidigital number, since it uses as much as digits as its factorization.

490221929 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 23328, while the sum is 38.

The square root of 490221929 is about 22140.9559188396. The cubic root of 490221929 is about 788.4925207583.

The spelling of 490221929 in words is "four hundred ninety million, two hundred twenty-one thousand, nine hundred twenty-nine".