1009655597 has 4 divisors (see below), whose sum is σ = 1013584476. Its totient is φ = 1005726720.

The previous prime is 1009655579. The next prime is 1009655617. The reversal of 1009655597 is 7955569001.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7955569001 = 617 ⋅12893953.

It can be written as a sum of positive squares in 2 ways, for example, as 906551881 + 103103716 = 30109^2 + 10154^2 .

It is a cyclic number.

It is not a de Polignac number, because 1009655597 - 2⁶ = 1009655533 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1009655557) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1964054 + ... + 1964567.

It is an arithmetic number, because the mean of its divisors is an integer number (253396119).

Almost surely, 2^1009655597 is an apocalyptic number.

It is an amenable number.

1009655597 is a deficient number, since it is larger than the sum of its proper divisors (3928879).

1009655597 is an equidigital number, since it uses as much as digits as its factorization.

1009655597 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3928878.

The product of its (nonzero) digits is 425250, while the sum is 47.

The square root of 1009655597 is about 31775.0782375119. The cubic root of 1009655597 is about 1003.2082285955.

The spelling of 1009655597 in words is "one billion, nine million, six hundred fifty-five thousand, five hundred ninety-seven".