537440069 has 4 divisors (see below), whose sum is σ = 538653696. Its totient is φ = 536226444.

The previous prime is 537440053. The next prime is 537440077. The reversal of 537440069 is 960044735.

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 537440069 - 2⁴ = 537440053 is a prime.

It is a super-2 number, since 2×537440069² = 577683655533449522, 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 (537440039) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 606149 + ... + 607034.

It is an arithmetic number, because the mean of its divisors is an integer number (134663424).

Almost surely, 2^537440069 is an apocalyptic number.

It is an amenable number.

537440069 is a deficient number, since it is larger than the sum of its proper divisors (1213627).

537440069 is a wasteful number, since it uses less digits than its factorization.

537440069 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1213626.

The product of its (nonzero) digits is 90720, while the sum is 38.

The square root of 537440069 is about 23182.7536975226. The cubic root of 537440069 is about 813.0364458647.

The spelling of 537440069 in words is "five hundred thirty-seven million, four hundred forty thousand, sixty-nine".