1115354399 has 4 divisors (see below), whose sum is σ = 1121516760. Its totient is φ = 1109192040.

The previous prime is 1115354351. The next prime is 1115354417. The reversal of 1115354399 is 9934535111.

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

It is a cyclic number.

It is not a de Polignac number, because 1115354399 - 2¹² = 1115350303 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 (1115354099) 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, 3080909 + ... + 3081270.

It is an arithmetic number, because the mean of its divisors is an integer number (280379190).

Almost surely, 2^1115354399 is an apocalyptic number.

1115354399 is a deficient number, since it is larger than the sum of its proper divisors (6162361).

1115354399 is an equidigital number, since it uses as much as digits as its factorization.

1115354399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6162360.

The product of its digits is 72900, while the sum is 41.

The square root of 1115354399 is about 33396.9219988909. The cubic root of 1115354399 is about 1037.0609819918.

The spelling of 1115354399 in words is "one billion, one hundred fifteen million, three hundred fifty-four thousand, three hundred ninety-nine".