535138789 has 4 divisors (see below), whose sum is σ = 537435756. Its totient is φ = 532841824.

The previous prime is 535138783. The next prime is 535138817. The reversal of 535138789 is 987831535.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 987831535 = 5 ⋅197566307.

It can be written as a sum of positive squares in 2 ways, for example, as 67930564 + 467208225 = 8242^2 + 21615^2 .

It is a cyclic number.

It is not a de Polignac number, because 535138789 - 2¹¹ = 535136741 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 (535138783) 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, 1148134 + ... + 1148599.

It is an arithmetic number, because the mean of its divisors is an integer number (134358939).

Almost surely, 2^535138789 is an apocalyptic number.

It is an amenable number.

535138789 is a deficient number, since it is larger than the sum of its proper divisors (2296967).

535138789 is a wasteful number, since it uses less digits than its factorization.

535138789 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2296966.

The product of its digits is 907200, while the sum is 49.

The square root of 535138789 is about 23133.0670037503. The cubic root of 535138789 is about 811.8743309162.

The spelling of 535138789 in words is "five hundred thirty-five million, one hundred thirty-eight thousand, seven hundred eighty-nine".