2938729 has 2 divisors, whose sum is σ = 2938730. Its totient is φ = 2938728.

The previous prime is 2938717. The next prime is 2938753. The reversal of 2938729 is 9278392.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2647129 + 291600 = 1627^2 + 540^2 .

It is a cyclic number.

It is not a de Polignac number, because 2938729 - 2⁵ = 2938697 is a prime.

It is a super-2 number, since 2×2938729² = 17272256270882, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2938691 and 2938700.

It is not a weakly prime, because it can be changed into another prime (2938709) 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 as a sum of consecutive naturals, namely, 1469364 + 1469365.

It is an arithmetic number, because the mean of its divisors is an integer number (1469365).

2^2938729 is an apocalyptic number.

It is an amenable number.

2938729 is a deficient number, since it is larger than the sum of its proper divisors (1).

2938729 is an equidigital number, since it uses as much as digits as its factorization.

2938729 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 54432, while the sum is 40.

The square root of 2938729 is about 1714.2721487559. The cubic root of 2938729 is about 143.2363282102.

The spelling of 2938729 in words is "two million, nine hundred thirty-eight thousand, seven hundred twenty-nine".