2729489 has 4 divisors (see below), whose sum is σ = 3119424. Its totient is φ = 2339556.

The previous prime is 2729473. The next prime is 2729491. The reversal of 2729489 is 9849272.

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 2729489 - 2⁴ = 2729473 is a prime.

It is a super-2 number, since 2×2729489² = 14900220402242, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2729429) 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, 194957 + ... + 194970.

It is an arithmetic number, because the mean of its divisors is an integer number (779856).

2^2729489 is an apocalyptic number.

It is an amenable number.

2729489 is a deficient number, since it is larger than the sum of its proper divisors (389935).

2729489 is an equidigital number, since it uses as much as digits as its factorization.

2729489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 389934.

The product of its digits is 72576, while the sum is 41.

The square root of 2729489 is about 1652.1165213144. The cubic root of 2729489 is about 139.7527779803.

The spelling of 2729489 in words is "two million, seven hundred twenty-nine thousand, four hundred eighty-nine".