16295991 has 8 divisors (see below), whose sum is σ = 22034304. Its totient is φ = 10710840.

The previous prime is 16295969. The next prime is 16296017. The reversal of 16295991 is 19959261.

It is a happy number.

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

It is not a de Polignac number, because 16295991 - 2⁵ = 16295959 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16295921) 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, 38041 + ... + 38466.

It is an arithmetic number, because the mean of its divisors is an integer number (2754288).

Almost surely, 2^16295991 is an apocalyptic number.

16295991 is a deficient number, since it is larger than the sum of its proper divisors (5738313).

16295991 is an equidigital number, since it uses as much as digits as its factorization.

16295991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76581.

The product of its digits is 43740, while the sum is 42.

The square root of 16295991 is about 4036.8293251016. The cubic root of 16295991 is about 253.5285808218.

The spelling of 16295991 in words is "sixteen million, two hundred ninety-five thousand, nine hundred ninety-one".