1111399995 has 8 divisors (see below), whose sum is σ = 1778240016. Its totient is φ = 592746656.

The previous prime is 1111399909. The next prime is 1111399999. The reversal of 1111399995 is 5999931111.

It is a happy number.

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 1111399995 - 2⁹ = 1111399483 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1111399999) 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 7 ways as a sum of consecutive naturals, for example, 37046652 + ... + 37046681.

It is an arithmetic number, because the mean of its divisors is an integer number (222280002).

Almost surely, 2^1111399995 is an apocalyptic number.

1111399995 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1111399995 is a deficient number, since it is larger than the sum of its proper divisors (666840021).

1111399995 is an equidigital number, since it uses as much as digits as its factorization.

1111399995 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74093341.

The product of its digits is 98415, while the sum is 48.

The square root of 1111399995 is about 33337.6663100464. Note that the first 3 decimals coincide. The cubic root of 1111399995 is about 1035.8339238141.

The spelling of 1111399995 in words is "one billion, one hundred eleven million, three hundred ninety-nine thousand, nine hundred ninety-five".