1529989 has 2 divisors, whose sum is σ = 1529990. Its totient is φ = 1529988.

The previous prime is 1529977. The next prime is 1530019. The reversal of 1529989 is 9899251.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1361889 + 168100 = 1167^2 + 410^2 .

It is a cyclic number.

It is not a de Polignac number, because 1529989 - 2¹¹ = 1527941 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1529909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 764994 + 764995.

It is an arithmetic number, because the mean of its divisors is an integer number (764995).

2^1529989 is an apocalyptic number.

It is an amenable number.

1529989 is a deficient number, since it is larger than the sum of its proper divisors (1).

1529989 is an equidigital number, since it uses as much as digits as its factorization.

1529989 is an evil number, because the sum of its binary digits is even.

The product of its digits is 58320, while the sum is 43.

The square root of 1529989 is about 1236.9272411908. The cubic root of 1529989 is about 115.2292591012.

The spelling of 1529989 in words is "one million, five hundred twenty-nine thousand, nine hundred eighty-nine".