1070209 has 6 divisors (see below), whose sum is σ = 1244994. Its totient is φ = 917280.

The previous prime is 1070207. The next prime is 1070221. The reversal of 1070209 is 9020701.

It can be written as a sum of positive squares in only one way, i.e., 540225 + 529984 = 735^2 + 728^2 .

It is not a de Polignac number, because 1070209 - 2¹ = 1070207 is a prime.

It is a super-2 number, since 2×1070209² = 2290694607362, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1070203) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 10872 + ... + 10969.

It is an arithmetic number, because the mean of its divisors is an integer number (207499).

2^1070209 is an apocalyptic number.

It is an amenable number.

1070209 is a deficient number, since it is larger than the sum of its proper divisors (174785).

1070209 is an equidigital number, since it uses as much as digits as its factorization.

1070209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21855 (or 21848 counting only the distinct ones).

The product of its (nonzero) digits is 126, while the sum is 19.

The square root of 1070209 is about 1034.5090623093. The cubic root of 1070209 is about 102.2875711548.

The spelling of 1070209 in words is "one million, seventy thousand, two hundred nine".