1700990009 has 4 divisors (see below), whose sum is σ = 1724291316. Its totient is φ = 1677688704.

The previous prime is 1700989993. The next prime is 1700990107. The reversal of 1700990009 is 9000990071.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 625150009 + 1075840000 = 25003^2 + 32800^2 .

It is a cyclic number.

It is not a de Polignac number, because 1700990009 - 2⁴ = 1700989993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1700990209) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11650544 + ... + 11650689.

It is an arithmetic number, because the mean of its divisors is an integer number (431072829).

Almost surely, 2^1700990009 is an apocalyptic number.

It is an amenable number.

1700990009 is a deficient number, since it is larger than the sum of its proper divisors (23301307).

1700990009 is an equidigital number, since it uses as much as digits as its factorization.

1700990009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23301306.

The product of its (nonzero) digits is 5103, while the sum is 35.

The square root of 1700990009 is about 41243.0601313724. The cubic root of 1700990009 is about 1193.7148252238.

The spelling of 1700990009 in words is "one billion, seven hundred million, nine hundred ninety thousand, nine".