1089629 has 2 divisors, whose sum is σ = 1089630. Its totient is φ = 1089628.

The previous prime is 1089611. The next prime is 1089653. The reversal of 1089629 is 9269801.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 931225 + 158404 = 965^2 + 398^2 .

It is an emirp because it is prime and its reverse (9269801) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1089629 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1089679) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 544814 + 544815.

It is an arithmetic number, because the mean of its divisors is an integer number (544815).

2^1089629 is an apocalyptic number.

It is an amenable number.

1089629 is a deficient number, since it is larger than the sum of its proper divisors (1).

1089629 is an equidigital number, since it uses as much as digits as its factorization.

1089629 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7776, while the sum is 35.

The square root of 1089629 is about 1043.8529589937. The cubic root of 1089629 is about 102.9025691286.

The spelling of 1089629 in words is "one million, eighty-nine thousand, six hundred twenty-nine".