3512729 has 4 divisors (see below), whose sum is σ = 3832080. Its totient is φ = 3193380.

The previous prime is 3512699. The next prime is 3512737. The reversal of 3512729 is 9272153.

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, and also an emirpimes, since its reverse is a distinct semiprime: 9272153 = 11 ⋅842923.

It is a cyclic number.

It is not a de Polignac number, because 3512729 - 2²⁰ = 2464153 is a prime.

It is a super-3 number, since 3×3512729³ (a number of 21 digits) contains 333 as substring.

It is a Duffinian number.

It is a plaindrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (3512749) 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, 159659 + ... + 159680.

It is an arithmetic number, because the mean of its divisors is an integer number (958020).

Almost surely, 2^3512729 is an apocalyptic number.

It is an amenable number.

3512729 is a deficient number, since it is larger than the sum of its proper divisors (319351).

3512729 is a wasteful number, since it uses less digits than its factorization.

3512729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 319350.

The product of its digits is 3780, while the sum is 29.

The square root of 3512729 is about 1874.2275742289. The cubic root of 3512729 is about 152.0132865809.

The spelling of 3512729 in words is "three million, five hundred twelve thousand, seven hundred twenty-nine".