490729381 has 2 divisors, whose sum is σ = 490729382. Its totient is φ = 490729380.

The previous prime is 490729363. The next prime is 490729399. The reversal of 490729381 is 183927094.

It is a balanced prime because it is at equal distance from previous prime (490729363) and next prime (490729399).

It can be written as a sum of positive squares in only one way, i.e., 486864225 + 3865156 = 22065^2 + 1966^2 .

It is a cyclic number.

It is not a de Polignac number, because 490729381 - 2⁹ = 490728869 is a prime.

It is a super-2 number, since 2×490729381² = 481630650753286322, which contains 22 as substring.

It is a congruent number.

It is a weakly prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 245364690 + 245364691.

It is an arithmetic number, because the mean of its divisors is an integer number (245364691).

Almost surely, 2^490729381 is an apocalyptic number.

It is an amenable number.

490729381 is a deficient number, since it is larger than the sum of its proper divisors (1).

490729381 is an equidigital number, since it uses as much as digits as its factorization.

490729381 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 108864, while the sum is 43.

The square root of 490729381 is about 22152.4125322729. The cubic root of 490729381 is about 788.7644956201.

The spelling of 490729381 in words is "four hundred ninety million, seven hundred twenty-nine thousand, three hundred eighty-one".