11899995 has 8 divisors (see below), whose sum is σ = 19040016. Its totient is φ = 6346656.

The previous prime is 11899991. The next prime is 11899997. The reversal of 11899995 is 59999811.

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

It is not a de Polignac number, because 11899995 - 2² = 11899991 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11899991) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 396652 + ... + 396681.

It is an arithmetic number, because the mean of its divisors is an integer number (2380002).

Almost surely, 2^11899995 is an apocalyptic number.

11899995 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

11899995 is a deficient number, since it is larger than the sum of its proper divisors (7140021).

11899995 is an equidigital number, since it uses as much as digits as its factorization.

11899995 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 793341.

The product of its digits is 262440, while the sum is 51.

The square root of 11899995 is about 3449.6369374182. The cubic root of 11899995 is about 228.3050894197.

The spelling of 11899995 in words is "eleven million, eight hundred ninety-nine thousand, nine hundred ninety-five".