1120397309 has 8 divisors (see below), whose sum is σ = 1140018552. Its totient is φ = 1100816640.

The previous prime is 1120397297. The next prime is 1120397347. The reversal of 1120397309 is 9037930211.

It can be written as a sum of positive squares in 4 ways, for example, as 17825284 + 1102572025 = 4222^2 + 33205^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1120397309 - 2¹² = 1120393213 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 (1120397389) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48497 + ... + 67769.

It is an arithmetic number, because the mean of its divisors is an integer number (142502319).

Almost surely, 2^1120397309 is an apocalyptic number.

It is an amenable number.

1120397309 is a deficient number, since it is larger than the sum of its proper divisors (19621243).

1120397309 is an equidigital number, since it uses as much as digits as its factorization.

1120397309 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20287.

The product of its (nonzero) digits is 10206, while the sum is 35.

The square root of 1120397309 is about 33472.3364735717. The cubic root of 1120397309 is about 1038.6216049382.

The spelling of 1120397309 in words is "one billion, one hundred twenty million, three hundred ninety-seven thousand, three hundred nine".