1089401 has 2 divisors, whose sum is σ = 1089402. Its totient is φ = 1089400.

The previous prime is 1089397. The next prime is 1089421. The reversal of 1089401 is 1049801.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1000000 + 89401 = 1000^2 + 299^2 .

It is a cyclic number.

It is not a de Polignac number, because 1089401 - 2² = 1089397 is a prime.

It is a plaindrome in base 15.

It is not a weakly prime, because it can be changed into another prime (1089421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 544700 + 544701.

It is an arithmetic number, because the mean of its divisors is an integer number (544701).

2^1089401 is an apocalyptic number.

It is an amenable number.

1089401 is a deficient number, since it is larger than the sum of its proper divisors (1).

1089401 is an equidigital number, since it uses as much as digits as its factorization.

1089401 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288, while the sum is 23.

The square root of 1089401 is about 1043.7437424962. The cubic root of 1089401 is about 102.8953913270.

The spelling of 1089401 in words is "one million, eighty-nine thousand, four hundred one".