2739869 has 4 divisors (see below), whose sum is σ = 2988960. Its totient is φ = 2490780.

The previous prime is 2739859. The next prime is 2739871. The reversal of 2739869 is 9689372.

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 a cyclic number.

It is not a de Polignac number, because 2739869 - 2⁴ = 2739853 is a prime.

It is a super-2 number, since 2×2739869² = 15013764274322, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2739809) 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 in 3 ways as a sum of consecutive naturals, for example, 124529 + ... + 124550.

It is an arithmetic number, because the mean of its divisors is an integer number (747240).

2^2739869 is an apocalyptic number.

It is an amenable number.

2739869 is a deficient number, since it is larger than the sum of its proper divisors (249091).

2739869 is a wasteful number, since it uses less digits than its factorization.

2739869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 249090.

The product of its digits is 163296, while the sum is 44.

The square root of 2739869 is about 1655.2549652546. The cubic root of 2739869 is about 139.9297096129.

The spelling of 2739869 in words is "two million, seven hundred thirty-nine thousand, eight hundred sixty-nine".