537409 has 4 divisors (see below), whose sum is σ = 541120. Its totient is φ = 533700.

The previous prime is 537403. The next prime is 537413. The reversal of 537409 is 904735.

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 537409 - 2³ = 537401 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 (537401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1629 + ... + 1930.

It is an arithmetic number, because the mean of its divisors is an integer number (135280).

2⁵³⁷⁴⁰⁹ is an apocalyptic number.

It is an amenable number.

537409 is a deficient number, since it is larger than the sum of its proper divisors (3711).

537409 is a wasteful number, since it uses less digits than its factorization.

537409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3710.

The product of its (nonzero) digits is 3780, while the sum is 28.

The square root of 537409 is about 733.0818508189. The cubic root of 537409 is about 81.3020778557.

It can be divided in two parts, 537 and 409, that added together give a triangular number (946 = T₄₃).

The spelling of 537409 in words is "five hundred thirty-seven thousand, four hundred nine".