1490789 has 2 divisors, whose sum is σ = 1490790. Its totient is φ = 1490788.

The previous prime is 1490773. The next prime is 1490807. The reversal of 1490789 is 9870941.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 902500 + 588289 = 950^2 + 767^2 .

It is a cyclic number.

It is not a de Polignac number, because 1490789 - 2⁴ = 1490773 is a prime.

It is a Chen prime.

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

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1490729) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 745394 + 745395.

It is an arithmetic number, because the mean of its divisors is an integer number (745395).

2^1490789 is an apocalyptic number.

It is an amenable number.

1490789 is a deficient number, since it is larger than the sum of its proper divisors (1).

1490789 is an equidigital number, since it uses as much as digits as its factorization.

1490789 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18144, while the sum is 38.

The square root of 1490789 is about 1220.9787057930. The cubic root of 1490789 is about 114.2366327189.

The spelling of 1490789 in words is "one million, four hundred ninety thousand, seven hundred eighty-nine".