2939729 has 4 divisors (see below), whose sum is σ = 3165876. Its totient is φ = 2713584.

The previous prime is 2939707. The next prime is 2939747. The reversal of 2939729 is 9279392.

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

It can be written as a sum of positive squares in 2 ways, for example, as 200704 + 2739025 = 448^2 + 1655^2 .

It is a cyclic number.

It is not a de Polignac number, because 2939729 - 2⁸ = 2939473 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 (2939749) 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, 113054 + ... + 113079.

It is an arithmetic number, because the mean of its divisors is an integer number (791469).

2^2939729 is an apocalyptic number.

It is an amenable number.

2939729 is a deficient number, since it is larger than the sum of its proper divisors (226147).

2939729 is a wasteful number, since it uses less digits than its factorization.

2939729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 226146.

The product of its digits is 61236, while the sum is 41.

The square root of 2939729 is about 1714.5637929223. The cubic root of 2939729 is about 143.2525733380.

The spelling of 2939729 in words is "two million, nine hundred thirty-nine thousand, seven hundred twenty-nine".