16397759 has 4 divisors (see below), whose sum is σ = 18740304. Its totient is φ = 14055216.

The previous prime is 16397747. The next prime is 16397761. The reversal of 16397759 is 95779361.

It is a happy number.

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

It is not a de Polignac number, because 16397759 - 2⁴ = 16397743 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 (16393759) 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 3 ways as a sum of consecutive naturals, for example, 1171262 + ... + 1171275.

It is an arithmetic number, because the mean of its divisors is an integer number (4685076).

Almost surely, 2^16397759 is an apocalyptic number.

16397759 is a deficient number, since it is larger than the sum of its proper divisors (2342545).

16397759 is an equidigital number, since it uses as much as digits as its factorization.

16397759 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2342544.

The product of its digits is 357210, while the sum is 47.

The square root of 16397759 is about 4049.4146490573. The cubic root of 16397759 is about 254.0552455936.

The spelling of 16397759 in words is "sixteen million, three hundred ninety-seven thousand, seven hundred fifty-nine".