2940689 has 2 divisors, whose sum is σ = 2940690. Its totient is φ = 2940688.

The previous prime is 2940673. The next prime is 2940709. The reversal of 2940689 is 9860492.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2560000 + 380689 = 1600^2 + 617^2 .

It is a cyclic number.

It is not a de Polignac number, because 2940689 - 2⁴ = 2940673 is a prime.

It is a nialpdrome in base 12.

It is not a weakly prime, because it can be changed into another prime (2940089) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1470344 + 1470345.

It is an arithmetic number, because the mean of its divisors is an integer number (1470345).

2^2940689 is an apocalyptic number.

It is an amenable number.

2940689 is a deficient number, since it is larger than the sum of its proper divisors (1).

2940689 is an equidigital number, since it uses as much as digits as its factorization.

2940689 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 31104, while the sum is 38.

The square root of 2940689 is about 1714.8437246583. The cubic root of 2940689 is about 143.2681651951.

The spelling of 2940689 in words is "two million, nine hundred forty thousand, six hundred eighty-nine".