2959689 has 4 divisors (see below), whose sum is σ = 3946256. Its totient is φ = 1973124.

The previous prime is 2959681. The next prime is 2959699. The reversal of 2959689 is 9869592.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 2959689 - 2³ = 2959681 is a prime.

It is a D-number.

It is a Duffinian number.

2959689 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (2959681) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 493279 + ... + 493284.

It is an arithmetic number, because the mean of its divisors is an integer number (986564).

2^2959689 is an apocalyptic number.

It is an amenable number.

2959689 is a deficient number, since it is larger than the sum of its proper divisors (986567).

2959689 is an equidigital number, since it uses as much as digits as its factorization.

2959689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 986566.

The product of its digits is 349920, while the sum is 48.

The square root of 2959689 is about 1720.3746684952. The cubic root of 2959689 is about 143.5760582934.

Subtracting 2959689 from its reverse (9869592), we obtain a triangular number (6909903 = T₃₇₁₇).

The spelling of 2959689 in words is "two million, nine hundred fifty-nine thousand, six hundred eighty-nine".