2985729 has 4 divisors (see below), whose sum is σ = 3980976. Its totient is φ = 1990484.

The previous prime is 2985713. The next prime is 2985733. The reversal of 2985729 is 9275892.

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 2985729 - 2⁴ = 2985713 is a prime.

It is a super-2 number, since 2×2985729² = 17829155322882, which contains 22 as substring.

It is a D-number.

It is not an unprimeable number, because it can be changed into a prime (2985739) 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, 497619 + ... + 497624.

It is an arithmetic number, because the mean of its divisors is an integer number (995244).

2^2985729 is an apocalyptic number.

It is an amenable number.

2985729 is a deficient number, since it is larger than the sum of its proper divisors (995247).

2985729 is an equidigital number, since it uses as much as digits as its factorization.

2985729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 995246.

The product of its digits is 90720, while the sum is 42.

The square root of 2985729 is about 1727.9262137024. The cubic root of 2985729 is about 143.9959007321.

It can be divided in two parts, 29 and 85729, that added together give a palindrome (85758).

The spelling of 2985729 in words is "two million, nine hundred eighty-five thousand, seven hundred twenty-nine".