2116739 has 8 divisors (see below), whose sum is σ = 2237760. Its totient is φ = 1998976.

The previous prime is 2116729. The next prime is 2116747. The reversal of 2116739 is 9376112.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2116739 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2116729) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 587 + ... + 2139.

It is an arithmetic number, because the mean of its divisors is an integer number (279720).

2^2116739 is an apocalyptic number.

2116739 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

2116739 is a deficient number, since it is larger than the sum of its proper divisors (121021).

2116739 is a wasteful number, since it uses less digits than its factorization.

It is an anagram of its base 11 representation: 2116739 = (1216379)₁₁.

2116739 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1629.

The product of its digits is 2268, while the sum is 29.

The square root of 2116739 is about 1454.9017148935. The cubic root of 2116739 is about 128.3972642993.

The spelling of 2116739 in words is "two million, one hundred sixteen thousand, seven hundred thirty-nine".