1490729 has 2 divisors, whose sum is σ = 1490730. Its totient is φ = 1490728.

The previous prime is 1490717. The next prime is 1490737. The reversal of 1490729 is 9270941.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 931225 + 559504 = 965^2 + 748^2 .

It is an emirp because it is prime and its reverse (9270941) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1490729 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a junction number, because it is equal to n+sod(n) for n = 1490695 and 1490704.

It is not a weakly prime, because it can be changed into another prime (1490789) 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, 745364 + 745365.

It is an arithmetic number, because the mean of its divisors is an integer number (745365).

2^1490729 is an apocalyptic number.

It is an amenable number.

1490729 is a deficient number, since it is larger than the sum of its proper divisors (1).

1490729 is an equidigital number, since it uses as much as digits as its factorization.

1490729 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4536, while the sum is 32.

The square root of 1490729 is about 1220.9541350927. The cubic root of 1490729 is about 114.2351001323.

The spelling of 1490729 in words is "one million, four hundred ninety thousand, seven hundred twenty-nine".